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Tennis tournament
The 2025 Yokohama Keio Challenger was a professional tennis tournament played on hardcourts. It was the 18th (men's) and 8th (women's) editions of the
2025_Keio_Challenger
2025 tennis event results
"Watanuki Wins Yokohama Keio Challenger". "Sakamoto Secures Yokohama Keio Challenger Crown". tennistourtalk.com. Retrieved 23 November 2025. Main draw Qualifying
2025 Keio Challenger – Men's singles
2025_Keio_Challenger_–_Men's_singles
2025 tennis event results
"Saketh Myneni wins Challenger title in Japan". November 24, 2024 – via www.thehindu.com. "Sakamoto Secures Yokohama Keio Challenger Crown". tennistourtalk
2025 Keio Challenger – Men's doubles
2025_Keio_Challenger_–_Men's_doubles
Tennis tournament
Yokohama Keio Challenger by Mita Kosan is a professional tennis tournament played on hardcourts. It is currently part of the ATP Challenger Tour and the
Keio_Challenger
Tennis tournament
The 2024 Yokohama Keio Challenger by Mita Kosan was a professional tennis tournament played on hardcourts. It was the 17th (men's) and 7th (women's) editions
2024_Keio_Challenger
Secondary tennis circuit season
Professionals (ATP) Challenger Tour in 2025 was the secondary professional tennis circuit organized by the ATP. The 2025 ATP Challenger Tour calendar comprised
2025_ATP_Challenger_Tour
2024 tennis event results
Heer, Florian (November 30, 2023). "Watanuki Wins Yokohama Keio Challenger". "Challenger Tour Weekly Recap: Comesana, Fognini, and Nardi Secure Australian
2024 Keio Challenger – Men's singles
2024_Keio_Challenger_–_Men's_singles
Japanese college baseball conference
in the Waseda, Keio, and Meiji University League, a three-school conference that began play in 1914 (albeit irregularly). Waseda and Keio had held their
Tokyo_Big6_Baseball_League
2024 tennis event results
Hassan Saketh Myneni Runners-up Blake Bayldon Calum Puttergill Score 6–2, 6–4 Events Singles men women Doubles men women ← 2023 · Keio Challenger · 2025 →
2024 Keio Challenger – Men's doubles
2024_Keio_Challenger_–_Men's_doubles
International men's tennis tournaments
The ATP Challenger Tour (known until the end of 2008 as the ATP Challenger Series) is a series of international men's professional tennis tournaments.
ATP_Challenger_Tour
Belarusian tennis player (born 2004)
tournament in Ceuta, Spain. In December, she won the title at the W40 Keio Challenger in Japan defeating Ayano Shimizu in the final, in straight sets. In
Aliona_Falei
Secondary tennis circuit season
Professionals (ATP) Challenger Tour in 2026 is the secondary professional tennis circuit organized by the ATP. The 2026 ATP Challenger Tour calendar comprises
2026_ATP_Challenger_Tour
Dutch tennis player (born 1996)
August 2020. Veldheer has won five ATP Challenger doubles titles: three with Filip Bergevi, at the 2023 Keio Challenger, at the 2024 Open de Oeiras and at
Mick_Veldheer
6–3, 6–4 Win 23–9 Jul 2025 ITF Nottingham, UK 50,000 Hard Harmony Tan 6–4, 6–2 Win 24–9 Nov 2025 Keio Challenger, Japan 40,000 Hard Ku Yeon-woo 6–3, 6–2
Zhang_Shuai_career_statistics
South Korean tennis player (born 2003)
and a best doubles ranking by the WTA of No. 372, reached on 6 October 2025. She is the current No. 1 Korean singles player. Ku made her WTA Tour main-draw
Ku_Yeon-woo
2026 tennis event results
Defaulted Heer, Florian (November 23, 2025). "Sakamoto Secures Yokohama Keio Challenger Crown". "Diaz Acosta leads Challenger champions with 4th title of 2026"
2026 Cary Tennis Classic – Men's singles
2026_Cary_Tennis_Classic_–_Men's_singles
University Rugby Championship - Keio University RFC, Waseda University Japan Rugby Club Champion - Tamariba Club Top Challenger Series - Kintetsu Liners Source:
45th All Japan Rugby Football Championship
45th_All_Japan_Rugby_Football_Championship
Railway line in Japan
Sagamihara-sen) is a Japanese railway line operated by the private railway operator Keio Corporation, connecting Hashimoto Station in Sagamihara, Kanagawa Prefecture
Keio_Sagamihara_Line
Hong Kong tennis player (born 2004)
Following a brief period of recovery, Wong traveled to Yokohama for the Keio Challenger. After defeating Altuğ Çelikbilek in the opening round, Wong made the
Coleman_Wong
Japanese tennis player (born 1999)
balancing record of 1–0. Shimizu won his first ATP Challenger Tour title at the 2024 Keio Challenger, defeating Li Tu in the final. "Yuta Shimizu | Overview"
Yuta_Shimizu
Secondary tennis circuit season
Professionals (ATP) Challenger Tour in 2024 was the secondary professional tennis circuit organized by the ATP. The 2024 ATP Challenger Tour calendar comprised
2024_ATP_Challenger_Tour
Subway line in Tokyo, Japan
to Sasazuka on the Keiō New Line, with some services continuing to Hashimoto in Sagamihara, Kanagawa via the Keiō Line and the Keiō Sagamihara Line. On
Toei_Shinjuku_Line
Private school in Fujisawa, Kanagawa, Japan
Keio Shonan-Fujisawa Junior & Senior High School (慶應義塾湘南藤沢中・高等部, Keiō Gijuku Shōnan Fujisawa Chū Kōtōbu) is located on the Shonan Fujisawa Campus of Keio
Keio Shonan-Fujisawa Junior and Senior High School
Keio_Shonan-Fujisawa_Junior_and_Senior_High_School
American computer scientist in Japan (1934–2026)
distinguished professor and co-director of Cyber Civilization Research Center at Keio University in Japan. Farber was widely known as a mentor who maintained a
David_J._Farber
Panathinaikos won 33–32 on aggregate CSM Oradea won 28–27 on aggregate KEIO CN Sabadell won 17–12 on aggregate Radnički Kragujevac won 32–25 on aggregate
2025–26 European Aquatics Euro Cup knockout stage
2025–26_European_Aquatics_Euro_Cup_knockout_stage
American-bred Thoroughbred racehorse (1995–2025)
Sports. 8 August 2025. "11 OCT 1998 (Sun): MAINICHI OKAN G2". netkeiba. "Arima Kinen result 1998". Racing Post. 27 December 1998. "Keio Hai Spring Cup result"
Grass_Wonder
Australian tennis player (born 1996)
his first Challenger match against Michail Pervolarakis, but lost to Dominik Koepfer in the second round. He then made his first Challenger quarterfinal
Li_Tu
Prime Minister of Japan from 2024 to 2025
from 2012 to 2014. The son of politician Jirō Ishiba, he graduated from Keio University in 1979. Prior to entering politics after his father's death,
Shigeru_Ishiba
British AI researcher (born 1976)
Retrieved 22 September 2024. "Announcement of The Keio Medical Science Prize 2024: Keio University". www.keio.ac.jp. Retrieved 22 September 2024. "National
Demis_Hassabis
Chinese tennis player (born 1996)
Blinkova, before losing to Leylah Fernandez in the second round. In November 2025, You was selected as part of the 2026 United Cup China team. (W) winner;
You_Xiaodi
City in Kantō, Japan
36 sq mi). Fuchū is located about 20 km west of the centre of Tokyo. Using the Keiō Line from Shinjuku, it is 25 minutes to Fuchū Station (main station). It
Fuchū,_Tokyo
South Korean computer scientist (born 1943)
and also began a professorship at Keio University. As of 2012, Chon was still a professor at both KAIST and Keio University. Chon was educated as a systems
Kilnam_Chon
Japanese media franchise
February 2021. "慶應義塾大学学術情報リポジトリ（KOARA）". KeiO Associated Repository of Academic Resources (in Japanese). Keio University: 8–9. 2015. Archived from the
Super_Sentai
City in Kantō, Japan
Keio Corporation - Keio Corporation – Keiō Line Mogusaen - Takahatafudō - Minamidaira - Hirayamajōshi-kōen Keio Corporation - Keio Corporation – Keiō
Hino,_Tokyo
Japanese footballer (born 2005)
participated in both the Denso Cup Challenge and the U-19 Youth Soccer Tournament in Düsseldorf. Shiogai joined Keio University on 2023, studying on the
Kento_Shiogai
Chinese racing driver (born 2001)
currently studies at the Faculty of Environment and Information Studies at Keio University. He has graduated from King’s College London with a bachelor's
Yu_Kuai
Japanese business executive (born 1956)
quality control crisis. Toyoda completed his undergraduate degree in law at Keio University and was awarded his Masters of Finance at Babson College, Massachusetts
Akio_Toyoda
Skyscraper district of Tokyo
foray into building skyscrapers with the first appearing in the 1970s with Keio Plaza Inter-Continental. It is the location of the Tokyo Metropolitan Government
Nishi-Shinjuku
Japanese architect (born 1954)
Columbia University, the University of Illinois at Urbana-Champaign, and Keio University, where in 2008, Kuma was awarded a Ph.D. degree in architecture
Kengo_Kuma
Water polo sports season
countries 2025–26 European Aquatics Champions League 2025–26 European Aquatics Conference Cup 2025–26 European Aquatics Challenger Cup 2025 European Aquatics
2025–26 European Aquatics Euro Cup
2025–26_European_Aquatics_Euro_Cup
Water polo sports season
on matchday 6. 2025–26 European Aquatics Euro Cup 2025–26 European Aquatics Conference Cup 2025–26 European Aquatics Challenger Cup 2025 European Aquatics
2025–26 European Aquatics Champions League
2025–26_European_Aquatics_Champions_League
Special ward in Kantō, Japan
Omokagebashi, Waseda Odakyu Electric Railway Odawara Line: Shinjuku Keio Corporation Keio Line, Keio New Line: Shinjuku Seibu Railway Seibu Shinjuku Line: Seibu-Shinjuku
Shinjuku
Japanese writer and philosopher (1835–1901)
ideas and institutions in Japan. He was the founder of Keio Gijuku (the foundation of the modern Keio University) and the newspaper Jiji Shinpō. Born into
Fukuzawa_Yukichi
American physician-scientist
Germany (2005) Golden Plate Award, Academy of Achievement (2007) Keio Medical Science Prize, Keio University Medical Science Fund, Tokyo, Japan (2007) European
Brian_Druker
Hamlet in Harrison, New York, United States
University, a private Jesuit research university. Keio University also operates a high school named Keio Academy of New York. Purchase is known for the Purchase
Purchase,_New_York
Japanese gridiron football player (born 1995)
school, he went on to Keio University's Faculty of Policy Management, where he joined the American football club. During his time at Keio, he served as team
Taku_Lee
International standards organization
in Computer Science and Automation became the European host of W3C, with Keio University Research Institute at SFC becoming the Asian host in September
World_Wide_Web_Consortium
Methods of automatically identifying objects by computer system
2016. Retrieved 23 June 2011. "Auto-ID Laborator". Keio Research Institute at SFC. Retrieved 2025-06-27. "AIDC 100". AIDC 100: Professionals Who Excel
Automatic identification and data capture
Automatic_identification_and_data_capture
Australian tennis player (born 1994)
City Traralgon ATP Challenger. He ended 2014 with a ranking of 487. In 2015, O'Connell played sporadically on the ITF and Challenger circuits across Australia
Christopher_O'Connell
Prefecture of Japan
Tōyoko Line Den-en-toshi Line Ōimachi Line Meguro Line Minatomirai Line Keio Sagamihara Line Izuhakone Railway Daiyūzan Line Enoshima Electric Railway
Kanagawa_Prefecture
City in Kantō, Japan
city. Keio Corporation - Keiō Line Sengawa – Tsutsujigaoka – Shibasaki – Kokuryō – Fuda – Chōfu – Nishi-Chōfu – Tobitakyū Keio Corporation - Keiō Sagamihara
Chōfu
Prime Minister of Japan since 2025
Prefectural Unebi High School [ja]. Despite qualifying to matriculate at Keio and Waseda universities in Tokyo, she did not attend as her parents refused
Sanae_Takaichi
Japanese economist and politician
Harvard (1989–90), and received tenure in the Faculty of Policy Management of Keio University SFC (Shonan Fujisawa Campus). Takenaka was picked by Koizumi to
Heizō_Takenaka
List of hymns or anthems of educational institutions
School Song [ja] Kansai University — Kansai University Song [ja] Keio University — Keio University College Song Kwansei Gakuin University — Sora no Tsubasa
List_of_school_songs
Private university in Setagaya, Japan
American Football Association Division 1 Top 8 Chuo Racoons Hosei Orange Keio Unicorns Meiji Griffins Nihon Phoenix NSSU Triumphant Lion Rikkyo Rushers
Kokushikan_University
South Korean business executive (born 1968)
National University, and his Master of Business Administration degree from Keio University, which is a rival university of his father and grandfather's alma
Lee_Jae-yong
Japanese Thoroughbred racehorse
Jean Gros (New Zealand Trophy), Purpur Ray (Falcon Stakes), King Hermes (Keio Hai Nisai Stakes) and Taisei Divine. Danon Scorpion raced on the outside
Danon_Scorpion
Japanese pair skater
an adult, Takahashi went on to major in Faculty of Policy Management at Keio University and graduated in 2021. Takahashi is able to speak seven different
Narumi_Takahashi
Ancient Greek city
November 2025. "Apollonius Rhodius' The Argonautica Book I". Project Gutenberg. Archived from the original on 4 October 2025. Retrieved 29 December 2025. "Herodotus'
Cius
Japanese tennis player (born 1994)
high ATP doubles ranking of No. 156 achieved on 16 June 2025. He won his first career ATP Challenger Tour singles title in December 2021 in Rio de Janeiro
Kaichi_Uchida
Aquatics Challenger Cup 2025 European Aquatics Super Cup 2025–26 European Aquatics Women's Champions League 2025–26 European Aquatics Women's Euro Cup 2025–26
2025–26 European Aquatics Champions League group stage
2025–26_European_Aquatics_Champions_League_group_stage
Private university in Machida, Tokyo, Japan
Closed Tokyo Jogakkan College Train stations JR East Aihara Machida Naruse Keio Tamasakai Odakyu Machida Tamagawagakuen-mae Tsurukawa Tokyu Minami-machida
Wako_University
European basketball association
Stefan Garaleas Georgi Glouchkov Athos Antoniou Michal Konecny Elisa Aguilar Keio Kuhi Wolfgang Brenscheidt John Gonçalves Asterios Zois Ivan Bodrogvary Bernard
FIBA_Europe
Australian tennis player (born 1993)
singles ranking of No. 663 on 24 February 2020. He plays mostly on ATP Challenger Tour. Puttergill made his ATP main draw debut at the 2021 Great Ocean
Calum_Puttergill
Japanese Spring High School Baseball Tournament
Archived from the original on May 20, 2020. Retrieved May 20, 2020. "Kanagawa's Keio ends 107-year drought with Koshien triumph". The Japan Times. August 23,
Japanese High School Baseball Championship
Japanese_High_School_Baseball_Championship
Japanese actor (1935–2022)
actor. Kawazu was born in Tokyo on 12 May 1935. While still a student at Keio University, Kawazu signed with Shochiku in 1958 and debuted in Kinoshita's
Yūsuke_Kawazu
Japanese professional wrestler
2019. "活動報告". keiowrestling.com (in Japanese). Keio University. Archived from the original on 24 January 2025. Retrieved 14 January 2019. "自己紹介｜シャム猫セッションルーム～saho～"
Aki_Shizuku
Commission; and in 1996, a third continental site was created in Japan at Keio University. W3C comprised various companies that were willing to create standards
History_of_the_World_Wide_Web
American-bred Thoroughbred racehorse
musical play of the same name, as Watanabe had a peer in his alma mater (Keio University) that he respected that spent time in Peru; as well as expanding
El_Condor_Pasa_(horse)
Retrieved 2025-02-23. Masqueradetheheart (2025-02-15). "Famine in Ancient Egypt". Egypt Museum. Archived from the original on 2025-02-16. Retrieved 2025-02-23
List_of_famines
Baseball stadium in Kariya, Aichi, Japan
1994. It hosted the 1950 Emperor's Cup final game between All Kwangaku and Keio University, which was played there on June 4, 1950. In 1964, lighting was
Kariya_Stadium
Japanese racehorse
by a half length victory as the favorite. On November 2, he contested the Keio Hai Nisai Stakes at Tokyo Racecourse. Racing mid-pack under jockey Kohei
Panja_Tower
Japanese physician and bacteriologist (1853–1931)
renamed Terumo Corporation. Kitasato also was the first dean of medicine at Keio University, first president of the Japan Medical Association, and served
Kitasato_Shibasaburō
The 2025 ITF Women's World Tennis Tour is the 2025 edition of the second-tier tour for women's professional tennis. It is organised by the International
2025 ITF Women's World Tennis Tour (October–December)
2025_ITF_Women's_World_Tennis_Tour_(October–December)
Japanese female businesswoman and politician (1983-)
graduating from Keio Girls' High School, she went on to study and graduate from the Department of Political Science, Faculty of Law, Keio University. Mukōyama
Jun_Mukōyama
Attempted coup d'état in Japan on November 25, 1970, by writer Yukio Mishima
autopsy on Morita's body in the forensic autopsy room of Keio University Hospital (慶應義塾大学病院, Keiō gijuku daigaku byōin), from 11:20 am to 1:25 pm. The autopsies
Mishima_incident
Slang term for broken English
Hildebrand (July 2005). "Some perspectives on the phenomenon of "Engrish"" (PDF). Keio Journal of International Studies. 15: 185–198. Archived (PDF) from the original
Engrish
Japanese sociologist and novelist (born 1985)
Furuichi entered the Faculty of Environment and Information Studies at Keio University in 2003. He was an exchange student in Oslo, Norway from 2005
Noritoshi_Furuichi
Subway line in Tokyo, Japan
No. 6 (都市交通審議会答申第6号). However, Keio opposed the plan on the grounds that the proposed route would traverse a key Keio Bus operating area and that the
Toei_Ōedo_Line
Sexual assault allegations against Fuji Television
such as "Miss [school name]," representing prestigious institutions like Keio University. Age was also a consideration; women around 30 were sometimes
Fuji Television sexual harassment scandal
Fuji_Television_sexual_harassment_scandal
Emperor of Japan from 1867 to 1912
the third year of Keiō), Keiō still continued until 23 October 1868 (the eighth day of the ninth month in the fourth year of Keiō), when Emperor Meiji
Emperor_Meiji
Transport provider on Shikoku Island, Japan
sets (since 2009, converted from former Keio 3000 series trains) Iyotetsu 7000 series three-car EMU sets (since 2025) 700 series set 728 in December 2021
Iyotetsu
Japanese Thoroughbred racehorse
Nisai Stakes), Shower Party (Daily Hai Sansai Stakes) and T M Southpaw (Keio Hai Sansai Stakes). Ridden by Yutaka Take he won by half a length from Grass
Kurofune_(horse)
Railway line in Gunma Prefecture, Japan
car [ja] (special event use only) 700 series 2-car EMUs [ja] (x8) (former Keio 3000 series) 800 series 2-car EMUs [ja] (former Tokyo Metro 03 series) "企業情報"
Jōmō_Line
American businessman (born 1949)
degree in economics at Stanford University. He completed an exchange year at Keio University in Tokyo during the 1971–1972 school year. He is fluent in English
Glen_S._Fukushima
Prime Minister of Japan from 2001 to 2006
Yokosuka High School. He graduated with a Bachelor of Economics degree from Keio University. He attended University College London before returning to Japan
Junichiro_Koizumi
Private university in Itabashi, Tokyo
college has produced strong outcomes in domestic universities and beyond Keio Gijyuku, Waseda, Meiji and Doshisha. The university continuously clinches
Teikyo_University
Japanese artist (born 1990)
international art fairs, including Paris Photo and Art Basel Hong Kong. In 2025, she was named one of the World Economic Forum's Young Global Leaders. In
Emi_Kusano
Chemical compound
Single-dose administration of up to 500 mg was shown safe in men in a study at Keio University. One 2021 clinical trial found that NMN improved muscular insulin
Nicotinamide_mononucleotide
Japanese Thoroughbred racehorse
Retrieved 2025-12-31. NET DREAMERS, Co., Ltd. "Air Jihad | Horse Profile, Pedigree, Form, Race Record". en.netkeiba.com. Retrieved 2025-12-31.{{cite
Air_Jihad
Japanese tennis player (born 2001)
Ponomar Ioana Gașpar Oana Georgeta Simion 6–4, 6–2 Win 3–0 Mar 2020 Keio Challenger, Japan W25 Hard Robu Kajitani Erina Hayashi Kanako Morisaki 1–6, 6–4
Naho_Sato
Woodblock print by Hokusai (1831)
(1) Isago no Sato Museum, Kawasaki (1) Japan Ukyo-e Museum, Matsumato (1) Keio University Library, Tokyo (1) Museum of Art, Atami (1) Ota Memorial Museum
The_Great_Wave_off_Kanagawa
Japanese-American entrepreneur
to his essay in Japanese. Ito earned a Ph.D. in media and governance from Keio University in 2018. His dissertation was titled, "The Practice of Change"
Joi_Ito
building cables ("a Tether challenge"), and climbing and descending cables ("a Power Beam challenge"). In a Power Beam Challenge, each team designs and builds
Space_elevator_competitions
Athletic stadium in Fujieda, Shizuoka, Japan
stadium in Fujieda, Shizuoka, Japan. It hosted the 1952 Emperor's Cup and final game between All Keio and Osaka Club was played there on May 6, 1952. v t e
Fujieda Higashi High School Ground
Fujieda_Higashi_High_School_Ground
Japanese academic
Information Physics and Computing until March 2009. In April 2009, he moved to Keio University, where he served as a professor at the Graduate School of Media
Susumu_Tachi
South Korean reality series
January 1, 2025. Retrieved August 20, 2025. "Hong Jin-ho reveals stress from 'Game of Blood' led to health issues". The Chosun Ilbo. February 27, 2025. Retrieved
Game_of_Blood
Research Institute in Tokyo, Japan
Central JR East JR West JSW JT JTEKT Kajima KEPCO Kanadevia Kao Kawasaki KDDI Keio Keisei Keyence Kikkoman Kioxia Kirin K Line Kobelco Komatsu Konami Konica
Nomura_Research_Institute
Country in East Asia
major companies include seven JR enterprises, Kintetsu, Seibu Railway and Keio Corporation. The high-speed Shinkansen (bullet trains) that connect major
Japan
Japanese-bred Thoroughbred racehorse and sire
Takamatsunomiya Kinen winner First Force, 2025 and 2026 Takamatsunomiya Kinen winner Satono Reve, and 2025 Yushun Himba winner Kamunyak. Sakura Bakushin
Sakura_Bakushin_O
2025 KEIO-CHALLENGER
2025 KEIO-CHALLENGER
2025 KEIO-CHALLENGER
2025 KEIO-CHALLENGER
2025 KEIO-CHALLENGER
2025 KEIO-CHALLENGER
2025 KEIO-CHALLENGER
2025 KEIO-CHALLENGER
2025 KEIO-CHALLENGER