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World Athletics Championships Tokyo 2025

World Athletics Championships Tokyo 2025

Leadoff runner for Japan Yuki Koike prepares in the rain before starting the men's 4x100-meter relay final at the World Athletics Championships at National Stadium in Tokyo on Sept. 21, 2025.

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World Athletics Championships Tokyo 2025

World Athletics Championships Tokyo 2025

(from L) Japan team members Hiroki Yanagita, Yuki Koike, Yoshihide Kiryu and Towa Uzawa acknowledge the crowd after finishing sixth in the men's 4x100-meter relay final at the World Athletics Championships at National Stadium in Tokyo on Sept. 21, 2025.

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World Athletics Championships Tokyo 2025

World Athletics Championships Tokyo 2025

(from L) Japan's Yuki Koike, Hiroki Yanagita, Yoshihide Kiryu and Towa Uzawa hold national flags after finishing sixth in the men's 4x100-meter relay final at the World Athletics Championships at National Stadium in Tokyo on Sept. 21, 2025.

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World Athletics Championships Tokyo 2025

World Athletics Championships Tokyo 2025

(from L) Japan's Yuki Koike, Hiroki Yanagita, Yoshihide Kiryu and Towa Uzawa hold national flags after finishing sixth in the men's 4x100-meter relay final at the World Athletics Championships at National Stadium in Tokyo on Sept. 21, 2025.

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World Athletics Championships Tokyo 2025

World Athletics Championships Tokyo 2025

(from L) Japan's Yuki Koike, Hiroki Yanagita, Yoshihide Kiryu and Towa Uzawa hold national flags after finishing sixth in the men's 4x100-meter relay final at the World Athletics Championships at National Stadium in Tokyo on Sept. 21, 2025.

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(SP)CHINA-HANGZHOU-ASIAN GAMES-ATHLETICS(CN)

(SP)CHINA-HANGZHOU-ASIAN GAMES-ATHLETICS(CN)

(231003) -- HANGZHOU, Oct. 3, 2023 (Xinhua) -- Xie Zhenye (R) of China hugs Koike Yuki of Japan after the Men's 4 x 100m Relay Final of Athletics at the 19th Asian Games in Hangzhou, east China's Zhejiang Province, Oct. 3, 2023. (Xinhua/Li Yibo)

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(SP)CHINA-HANGZHOU-ASIAN GAMES-ATHLETICS(CN)

(SP)CHINA-HANGZHOU-ASIAN GAMES-ATHLETICS(CN)

(231003) -- HANGZHOU, Oct. 3, 2023 (Xinhua) -- Xie Zhenye (R) of China hugs Koike Yuki of Japan after the Men's 4 x 100m Relay Final of Athletics at the 19th Asian Games in Hangzhou, east China's Zhejiang Province, Oct. 3, 2023. (Xinhua/Li Yibo)

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(SP)CHINA-HANGZHOU-ASIAN GAMES-ATHLETICS(CN)

(SP)CHINA-HANGZHOU-ASIAN GAMES-ATHLETICS(CN)

(231002) -- HANGZHOU, Oct. 2, 2023 (Xinhua) -- Koike Yuki (L)/Kiryu Yoshihide of Japan compete during the Men's 4 x 100m Relay Heat of Athletics at the 19th Asian Games in Hangzhou, east China's Zhejiang Province, Oct. 2, 2023. (Xinhua/Li Yibo)

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(SP)CHINA-HANGZHOU-ASIAN GAMES-ATHLETICS(CN)

(SP)CHINA-HANGZHOU-ASIAN GAMES-ATHLETICS(CN)

(230930) -- HANGZHOU, Sept. 30, 2023 (Xinhua) -- Abdullah Abkar Mohammed (R) of Saudi Arabia greets Koike Yuki of Japan after the Men's 100m Semifinal of Athletics at the 19th Asian Games in Hangzhou, east China's Zhejiang Province, Sept. 30, 2023. (Xinhua/Jiang Han)

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(SP)CHINA-HANGZHOU-ASIAN GAMES-ATHLETICS(CN)

(SP)CHINA-HANGZHOU-ASIAN GAMES-ATHLETICS(CN)

(230930) -- HANGZHOU, Sept. 30, 2023 (Xinhua) -- Koike Yuki (R) of Japan greets Abdullah Abkar Mohammed of Saudi Arabia after the Men's 100m Semifinal of Athletics at the 19th Asian Games in Hangzhou, east China's Zhejiang Province, Sept. 30, 2023. (Xinhua/Song Yanhua)

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(SP)CHINA-HANGZHOU-ASIAN GAMES-ATHLETICS(CN)

(SP)CHINA-HANGZHOU-ASIAN GAMES-ATHLETICS(CN)

(230929) -- HANGZHOU, Sept. 29, 2023 (Xinhua) -- Koike Yuki of Japan reacts before the Men's 100m Heat of Athletics at the 19th Asian Games in Hangzhou, east China's Zhejiang Province, Sept. 29, 2023. (Xinhua/Jiang Han)

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(SP)CHINA-HANGZHOU-ASIAN GAMES-ATHLETICS(CN)

(SP)CHINA-HANGZHOU-ASIAN GAMES-ATHLETICS(CN)

(230929) -- HANGZHOU, Sept. 29, 2023 (Xinhua) -- Chen Guanfeng (R) of China and Koike Yuki of Japan react before the Men's 100m Heat of Athletics at the 19th Asian Games in Hangzhou, east China's Zhejiang Province, Sept. 29, 2023. (Xinhua/Li Yibo)

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Kobe high school team takes part in hacking contest

Kobe high school team takes part in hacking contest

LAS VEGAS, Nevada - Yuki Koike (C) and other students of Nada High School in Kobe, western Japan, take part in the Def Con hackers' conference in Las Vegas, Nevada, on Aug. 8, 2014.

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Athletics: Oda Memorial meet in Hiroshima

Athletics: Oda Memorial meet in Hiroshima

Yuki Koike (C) wins the men's 100-meter sprint final at the Oda Memorial athletics meet at Edion Stadium Hiroshima in the western Japan city on April 29, 2022.

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Athletics: Oda Memorial meet in Hiroshima

Athletics: Oda Memorial meet in Hiroshima

Yuki Koike wins the men's 100-meter sprint final at the Oda Memorial athletics meet at Edion Stadium Hiroshima in the western Japan city on April 29, 2022.

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Tokyo Olympics: Athletics

Tokyo Olympics: Athletics

Japanese sprinters (from R) Ryota Yamagata, Shuhei Tada, Yoshihide Kiryu and Yuki Koike look dejected after failing to make a baton handover in the men's 4x100-meter relay final at the Tokyo Olympics on Aug. 6, 2021, at the National Stadium.

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Tokyo Olympics: Athletics

Tokyo Olympics: Athletics

Japanese sprinters (from L) Yuki Koike, Ryota Yamagata, Yoshihide Kiryu and Shuhei Tada look dejected after failing to make a baton handover in the men's 4x100-meter relay final at the Tokyo Olympics on Aug. 6, 2021, at the National Stadium.

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Tokyo Olympics: Athletics

Tokyo Olympics: Athletics

Japanese sprinters (from L) Shuhei Tada, Yoshihide Kiryu, Yuki Koike and Ryota Yamagata smile after finishing third in a first-round heat of the Tokyo Olympic men's 4x100-meter relay on Aug. 5, 2021, at the National Stadium in Tokyo.

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Tokyo Olympics: Athletics

Tokyo Olympics: Athletics

(From L) Yuki Koike of Japan, Kemar Hyman of Cayman Islands, Lalu Muhammad Zohri of Indonesia and Su Bingtian of China compete in the first round of the men's 100 meters at the Tokyo Olympics on July 31, 2021, at the National Stadium in Tokyo. (Kyodo)(SELECTION) ==Kyodo

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Tokyo Olympics: Athletics

Tokyo Olympics: Athletics

(From L) Jason Rogers of Saint Kitts and Nevis, Yuki Koike of Japan and Kemar Hyman of Cayman Islands compete in the first round of the men's 100 meters at the Tokyo Olympics on July 31, 2021, at National Stadium in Tokyo. (Kyodo)(SELECTION) ==Kyodo

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Athletics: Japanese c'ships, Olympic qualifying meet

Athletics: Japanese c'ships, Olympic qualifying meet

Yuki Koike (4th from R) wins the men's 200-meter final at the national athletics championships at Yanmar Stadium Nagai in Osaka, western Japan, on June 27, 2021, earning a berth for the Tokyo Olympics.

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Athletics: Japanese c'ships, Olympic qualifying meet

Athletics: Japanese c'ships, Olympic qualifying meet

Yuki Koike reacts after winning the men's 200-meter final at the national athletics championships at Yanmar Stadium Nagai in Osaka, western Japan, on June 27, 2021, earning a berth for the Tokyo Olympics.

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Athletics: Japanese c'ships, Olympic qualifying meet

Athletics: Japanese c'ships, Olympic qualifying meet

Yuki Koike reacts after winning the men's 200-meter final at the national athletics championships at Yanmar Stadium Nagai in Osaka, western Japan, on June 27, 2021, earning a berth for the Tokyo Olympics.

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Athletics: Japanese c'ships, Olympic qualifying meet

Athletics: Japanese c'ships, Olympic qualifying meet

Yuki Koike reacts after winning the men's 200-meter final at the national athletics championships at Yanmar Stadium Nagai in Osaka, western Japan, on June 27, 2021, earning a berth for the Tokyo Olympics.

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Athletics: Japanese c'ships, Olympic qualifying meet

Athletics: Japanese c'ships, Olympic qualifying meet

Yuki Koike (3rd from L) runs en route to winning the men's 200-meter final at the national athletics championships at Yanmar Stadium Nagai in Osaka, western Japan, on June 27, 2021, earning a berth for the Tokyo Olympics.

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Athletics: Japanese c'ships, Olympic qualifying meet

Athletics: Japanese c'ships, Olympic qualifying meet

Yuki Koike runs en route to winning the men's 200-meter final at the national athletics championships at Yanmar Stadium Nagai in Osaka, western Japan, on June 27, 2021, earning a berth for the Tokyo Olympics. Seen on the left is Shota Iizuka who finished sixth.

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Athletics: Japanese c'ships, Olympic qualifying meet

Athletics: Japanese c'ships, Olympic qualifying meet

Yuki Koike (R) wins the men's 200-meter final at the national athletics championships at Yanmar Stadium Nagai in Osaka, western Japan, on June 27, 2021, earning a berth for the Tokyo Olympics. Seen on the left is Shota Iizuka who finished sixth.

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Athletics: Japanese sprinters

Athletics: Japanese sprinters

Combined file photo shows (from L) Japanese sprinters Yuki Koike, Shuhei Tada and Aska Cambridge who are scheduled to compete in the men's 100 meters at the national athletics championships to be held in Osaka for four days from June 24, 2021, where Tokyo Olympic spots will be contested.

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Kobe high school team takes part in hacking contest

Kobe high school team takes part in hacking contest

LAS VEGAS, Nevada - Yuki Koike (C) and other students of Nada High School in Kobe, western Japan, take part in the Def Con hackers' conference in Las Vegas, Nevada, on Aug. 8, 2014. (Kyodo)

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Athletics: Olympic test event

Athletics: Olympic test event

Justin Gatlin (2nd from L) of the United States runs en route to winning the men's 100-meter final during an Olympic athletics test event at an empty National Stadium in Tokyo on May 9, 2021, alongside Japan's Shuhei Tada (R) and Yuki Koike, who finished second and third, respectively.

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Athletics: Japanese national c'ships

Athletics: Japanese national c'ships

Yoshihide Kiryu (C) poses with his gold medal after winning the men's 100-meter sprint at the national athletics championships at Denka Big Swan Stadium in Niigata, northwest of Tokyo, on Oct. 2, 2020, alongside second-place Aska Cambridge (L) and third-place Yuki Koike.

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Athletics: Japanese national c'ships

Athletics: Japanese national c'ships

Yoshihide Kiryu (C) poses with his gold medal after winning the men's 100-meter sprint at the national athletics championships at Denka Big Swan Stadium in Niigata, northwest of Tokyo, on Oct. 2, 2020, alongside second-place Aska Cambridge (L) and third-place Yuki Koike.

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Athletics: 100-m final at Diamond League

Athletics: 100-m final at Diamond League

Athletes compete in the men's 100-meter final race at the Diamond League in London on July 20, 2019. Yuki Koike (2nd from R) finished fourth in 9.98 seconds, Japan's second best time on record. (Kyodo) ==Kyodo

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Athletics: 100-m final at Diamond League

Athletics: 100-m final at Diamond League

Yuki Koike (L) of Japan finishes fourth in the men's 100-meter final race at the Diamond League in London on July 20, 2019, in 9.98 seconds, Japan's second best time on record. (Kyodo) ==Kyodo

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Athletics: 100-m final at Diamond League

Athletics: 100-m final at Diamond League

Yuki Koike smiles after finishing fourth in the men's 100-meter final race at the Diamond League, in 9.98 seconds, Japan's second best time on record, in London on July 20, 2019. (Kyodo) ==Kyodo

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Athletics: 100-m final at Diamond League

Athletics: 100-m final at Diamond League

Yuki Koike smiles after finishing fourth in the men's 100-meter final race at the Diamond League, in 9.98 seconds, Japan's second best time on record, in London on July 20, 2019. (Kyodo) ==Kyodo

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Athletics: 100-m final at Diamond League

Athletics: 100-m final at Diamond League

Athletes compete in the men's 100-meter final race at the Diamond League in London on July 20, 2019. Yuki Koike (C) finished fourth in 9.98 seconds, Japan's second best time on record. (Kyodo) ==Kyodo

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Athletics: 100-m final at Diamond League

Athletics: 100-m final at Diamond League

Yuki Koike smiles after finishing fourth in the men's 100-meter final race at the Diamond League, in 9.98 seconds, Japan's second best time on record, in London on July 20, 2019. (Kyodo) ==Kyodo

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Athletics: 100-m final at Diamond League

Athletics: 100-m final at Diamond League

Yuki Koike (R) of Japan finishes fourth in the men's 100-meter final race at the Diamond League in 9.98 seconds, Japan's second best time on record, in London on July 20, 2019. (Kyodo) ==Kyodo

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Athletics: 100-m final at Diamond League

Athletics: 100-m final at Diamond League

Yuki Koike competes in the men's 100-meter final race at the Diamond League in London on July 20, 2019, en route to finishing fourth in 9.98 seconds, Japan's second best time on record. (Kyodo) ==Kyodo

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Athletics: men's 200 meters at Japan championships

Athletics: men's 200 meters at Japan championships

Abdul Hakim Sani Brown holds the gold medal after winning the men's 200 meters at the Japan championships in Fukuoka, southwestern Japan, on June 30, 2019, alongside runner-up Yuki Koike (L) and Yoshihide Kiryu who finished third. (Kyodo) ==Kyodo

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Athletics: men's 200 meters at Japan championships

Athletics: men's 200 meters at Japan championships

Abdul Hakim Sani Brown (R) sprints to victory in the men's 200 meters at the Japan championships in Fukuoka, southwestern Japan, on June 30, 2019, two days after topping the podium in the 100 meters. Yuki Koike (L) finished second. (Kyodo) ==Kyodo

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Athletics: men's 200 meters at Japan championships

Athletics: men's 200 meters at Japan championships

Abdul Hakim Sani Brown (R) sprints to victory in the men's 200 meters at the Japan championships in Fukuoka, southwestern Japan, on June 30, 2019, two days after topping the podium in the 100 meters. Yuki Koike (L) finished second. (Kyodo) ==Kyodo

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Athletics: men's 200 meters at Japan championships

Athletics: men's 200 meters at Japan championships

Abdul Hakim Sani Brown (R) sprints to victory in the men's 200 meters at the Japan championships in Fukuoka, southwestern Japan, on June 30, 2019, two days after topping the podium in the 100 meters. Yuki Koike (L) finished second. (Kyodo) ==Kyodo

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Athletics: men's 100 m at Japan championships

Athletics: men's 100 m at Japan championships

Japan-record holder Abdul Hakim Sani Brown (C) holds the gold medal after winning the men's 100 meters at the national championships in Fukuoka, southwestern Japan, on June 28, 2019, alongside runner-up Yoshihide Kiryu (L) and Yuki Koike who finished third. (Kyodo) ==Kyodo

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Athletics: Japan disqualified in men's 4x100 relay

Athletics: Japan disqualified in men's 4x100 relay

Third runner Yuki Koike and Yoshihide Kiryu mess up the final baton handoff in the men's 4x100 heats at the IAAF World Relays in Yokohama, near Tokyo, on May 11, 2019. (Kyodo) ==Kyodo

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Athletics: Japan disqualified in men's 4x100 relay

Athletics: Japan disqualified in men's 4x100 relay

(From L) Yoshihide Kiryu, Shuhei Tada, Yuki Koike and Ryota Yamagata are pictured after a preliminary round race in the men's 4x100 heats at the IAAF World Relays in Yokohama, near Tokyo, on May 11, 2019. The Japanese team was disqualified for messing up the final baton handoff in the race. (Kyodo) ==Kyodo

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Athletics: Japan disqualified in men's 4x100 relay

Athletics: Japan disqualified in men's 4x100 relay

Third runner Yuki Koike and Yoshihide Kiryu mess up the final baton handoff in the men's 4x100 heats at the IAAF World Relays in Yokohama, near Tokyo, on May 11, 2019. (Kyodo) ==Kyodo

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Athletics: Japan disqualified in men's 4x100 relay

Athletics: Japan disqualified in men's 4x100 relay

(From L) Ryota Yamagata, Shuhei Tada, Yoshihide Kiryu and Yuki Koike watch an electric board after a preliminary round race in the men's 4x100 heats at the IAAF World Relays in Yokohama, near Tokyo, on May 11, 2019. The Japanese team was disqualified for messing up the final baton handoff in the race. (Kyodo) ==Kyodo

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Athletics: Japan disqualified in men's 4x100 relay

Athletics: Japan disqualified in men's 4x100 relay

Third runner Yuki Koike and Yoshihide Kiryu mess up the final baton handoff in the men's 4x100 heats at the IAAF World Relays in Yokohama, near Tokyo, on May 11, 2019. (Kyodo) ==Kyodo

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