# Japan at the 2019 World Aquatics Championships

Japan competed at the 2019 World Aquatics Championships in Gwangju, South Korea from 12 to 28 July.

## Medalists

| Medal | Name | Sport | Event | Date |
| Gold | Daiya Seto | Swimming | Men's 200 metre individual medley | 25 July |
| Gold | Daiya Seto | Swimming | Men's 400 metre individual medley | 28 July |
| Silver | Katsuhiro Matsumoto | Swimming | Men's 200 metre freestyle | 23 July |
| Silver | Daiya Seto | Swimming | Men's 200 metre butterfly | 24 July |
| Bronze | Yukiko Inui | Artistic swimming | Solo technical routine | 13 July |
| Bronze | Atsushi Abe Yumi Adachi | Artistic swimming | Mixed duet technical routine | 15 July |
| Bronze | Yukiko Inui | Artistic swimming | Solo free routine | 17 July |
| Bronze | Atsushi Abe Yumi Adachi | Artistic swimming | Mixed duet free routine | 20 July |
| Bronze | Ippei Watanabe | Swimming | Men's 200 metre breaststroke | 26 July |
| Bronze | Yui Ohashi | Swimming | Women's 400 m individual medley | 28 July |

## Artistic swimming

Japan entered 13 artistic swimmers.

### Women

| Athlete | Event | Preliminaries | Preliminaries | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank |
| Yukiko Inui | Solo technical routine | 91.7284 | 3 Q | 92.3084 | |
| Yukiko Inui | Solo free routine | 92.5667 | 3 Q | 93.2000 | |
| Yukiko Inui Megumu Yoshida | Duet technical routine | 91.9210 | 4 Q | 92.1116 | 4 |
| Yukiko Inui Megumu Yoshida | Duet free routine | 92.4333 | 4 Q | 93.0000 | 4 |
| Juka Fukumura Yukiko Inui Moeka Kijima Kei Marumo Kano Omata Mayu Tsukamoto Mashiro Yasunaga Megumu Yoshida Okina Kyogoku (R) Akane Yanagisawa (R) | Team technical routine | 92.3274 | 4 Q | 92.7207 | 4 |
| Juka Fukumura Yukiko Inui Moeka Kijima Okina Kyogoku Mayu Tsukamoto Akane Yanagisawa Mashiro Yasunaga Megumu Yoshida Kei Marumo (R) Kano Omata (R) | Team free routine | 92.6667 | 4 Q | 93.3667 | 4 |
| Juka Fukumura Yukiko Inui Moeka Kijima Hinata Kumagai Okina Kyogoku Kei Marumo Mayu Tsukamoto Akane Yanagisawa Mashiro Yasunaga Megumu Yoshida Kano Omata (R) | Free routine combination | 93.0000 | 4 Q | 93.2333 | 4 |

### Mixed

| Athlete | Event | Preliminaries | Preliminaries | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank |
| Atsushi Abe Yumi Adachi | Duet technical routine | 88.2948 | 3 Q | 88.5113 | |
| Atsushi Abe Yumi Adachi | Duet free routine | 89.8000 | 3 Q | 90.4000 | |
Legend: (R) = Reserve Athlete

## Diving

Japan entered seven divers.

### Men

| Athlete | Event | Preliminaries | Preliminaries | Semifinals | Semifinals | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank | Points | Rank |
| Sho Sakai | 3 m springboard | 375.00 | 28 | did not advance | did not advance | did not advance | did not advance |
| Ken Terauchi | 3 m springboard | 395.80 | 19 | did not advance | did not advance | did not advance | did not advance |
| Sho Sakai Ken Terauchi | Synchronized 3 metre springboard | 384.09 | 2 Q | — | — | 389.43 | 7 |

### Women

| Athlete | Event | Preliminaries | Preliminaries | Semifinals | Semifinals | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank | Points | Rank |
| Sayaka Mikami | 3 m springboard | 291.60 | 8 Q | 307.95 | 7 Q | 323.05 | 5 |
| Matsuri Arai | 10 metre platform | 304.75 | 11 Q | 312.45 | 10 Q | 321.45 | 9 |
| Rin Kaneto | 10 metre platform | 333.95 | 5 Q | 285.05 | 17 | did not advance | did not advance |
| Haruka Enomoto Hazuki Miyamoto | Synchronized 3 metre springboard | 253.50 | 14 | — | — | did not advance | did not advance |

## Open water swimming

Japan qualified two male and two female open water swimmers.

### Men

| Athlete | Event | Time | Rank |
| Taiki Nonaka | Men's 10 km | 1:51:35.3 | 45 |
| Takeshi Toyoda | Men's 10 km | 1:50:22.0 | 39 |

### Women

| Athlete | Event | Time | Rank |
| Yumi Kida | Women's 10 km | 1:55:26.7 | 22 |
| Minami Niikura | Women's 10 km | 1:55:46.8 | 30 |

### Mixed

| Athlete | Event | Time | Rank |
| Minami Niikura Yumi Kida Takeshi Toyoda Taiki Nonaka | Team | 56:52.1 | 14 |

## Swimming

Japan entered 25 swimmers.

### Men

| Athlete | Event | Heat | Heat | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank |
| Naito Ehara | 200 m freestyle | 1:47.46 | 20 | did not advance | did not advance | did not advance | did not advance |
| Ryosuke Irie | 100 m backstroke | 53.38 | 5 Q | 53.13 | 6 Q | 53.22 | 6 |
| Ryosuke Irie | 200 m backstroke | 1:57.60 | 7 Q | 1:57.26 | 8 Q | 1:56.52 | 5 |
| Kazuki Kohinata | 200 m breaststroke | 2:09.92 | 14 Q | 2:08.42 | 9 | did not advance | did not advance |
| Yasuhiro Koseki | 50 m breaststroke | 27.33 | 16 Q | 27.22 | 13 | did not advance | did not advance |
| Yasuhiro Koseki | 100 m breaststroke | 58.91 | 3 Q | 58.89 | 4 Q | 58.93 | 4 |
| Katsuhiro Matsumoto | 200 m freestyle | 1:46.51 | 7 Q | 1:45.56 | =4 Q | 1:45.22 NR | |
| Naoki Mizunuma | 50 m butterfly | 23.74 | 21 | did not advance | did not advance | did not advance | did not advance |
| Naoki Mizunuma | 100 m butterfly | 52.23 | 12 Q | 51.71 | 9 | did not advance | did not advance |
| Katsumi Nakamura | 50 m freestyle | 22.41 | 26 | did not advance | did not advance | did not advance | did not advance |
| Katsumi Nakamura | 100 m freestyle | 48.68 | =11 Q | 48.45 | =10 | did not advance | did not advance |
| Daiya Seto | 200 m butterfly | 1:54.56 | 2 Q | 1:55.33 | 3 Q | 1:53.86 | |
| Daiya Seto | 200 m individual medley | 1:57.90 | 2 Q | 1:57.10 | 3 Q | 1:56.14 | |
| Daiya Seto | 400 m individual medley | 4:12.27 | 1 Q | — | — | 4:08.95 | |
| Shinri Shioura | 50 m freestyle | 21.78 | 5 Q | 21.74 | 7 Q | 21.81 | 8 |
| Shinri Shioura | 100 m freestyle | 48.68 | =11 Q | 48.54 | 13 | did not advance | did not advance |
| Keita Sunama | 200 m backstroke | 1:58.40 | 19 | did not advance | did not advance | did not advance | did not advance |
| Ippei Watanabe | 200 m breaststroke | 2:09.68 | 9 Q | 2:08.04 | 6 Q | 2:06.73 | |
| Katsumi Nakamura Shinri Shioura Katsuhiro Matsumoto Akira Namba | 4×100 m freestyle relay | 3:14.16 | 9 | — | — | did not advance | did not advance |
| Kotaro Takahashi Katsuhiro Matsumoto Keisuke Yoshida Daiya Seto | 4×200 m freestyle relay | 7:09.23 | 9 | — | — | did not advance | did not advance |
| Ryosuke Irie Yasuhiro Koseki Naoki Mizunuma Katsumi Nakamura | 4×100 m medley relay | 3:32.34 | 3 Q | — | — | 3:30.35 | 4 |

### Women

| Athlete | Event | Heat | Heat | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank |
| Reona Aoki | 100 m breaststroke | 1:06.81 | 5 Q | 1:06.30 | 3 Q | 1:06.40 | 4 |
| Reona Aoki | 200 m breaststroke | 2:25.93 | 11 Q | 2:27.95 | 15 | did not advance | did not advance |
| Suzuka Hasegawa | 100 m butterfly | 58.71 | 19 | did not advance | did not advance | did not advance | did not advance |
| Suzuka Hasegawa | 200 m butterfly | 2:10.03 | 12 Q | 2:09.22 | 10 | did not advance | did not advance |
| Chihiro Igarashi | 200 m freestyle | 1:59.18 | 16 Q | 1:58.97 | 16 | did not advance | did not advance |
| Chihiro Igarashi | 400 m freestyle | 4:13.81 | 20 | — | — | did not advance | did not advance |
| Hiroko Makino | 100 m butterfly | 58.33 | 16 Q | 58.49 | 16 | did not advance | did not advance |
| Hiroko Makino | 200 m butterfly | 2:09.88 | 10 Q | 2:09.60 | 11 | did not advance | did not advance |
| Yui Ohashi | 200 m individual medley | 2:11.09 | 9 Q | 2:10.04 | 6 Q | DSQ | DSQ |
| Yui Ohashi | 400 m individual medley | 4:37.23 | 2 Q | — | — | 4:32.33 | |
| Rika Omoto | 50 m freestyle | 25.17 | 20 | did not advance | did not advance | did not advance | did not advance |
| Rika Omoto | 100 m freestyle | 54.89 | 26 | did not advance | did not advance | did not advance | did not advance |
| Rika Omoto | 200 m individual medley | 2:10.50 | 5 Q | 2:09.68 | 5 Q | 2:09.32 | 5 |
| Natsumi Sakai | 50 m backstroke | 28.41 | 20 | did not advance | did not advance | did not advance | did not advance |
| Natsumi Sakai | 100 m backstroke | 1:00.05 | 10 Q | 59.71 | 8 Q | 59.56 | =6 |
| Natsumi Sakai | 200 m backstroke | 2:10.40 | 12 Q | 2:10.11 | 11 | did not advance | did not advance |
| Rio Shirai | 200 m freestyle | 1:58.10 | 12 Q | 1:56.82 | 8 Q | 1:57.14 | 8 |
| Rio Shirai | 200 m backstroke | 2:14.98 | 31 | did not advance | did not advance | did not advance | did not advance |
| Tomomi Aoki Aya Sato Rio Shirai Rika Omoto | 4×100 m freestyle relay | 3:36.17 | 5 Q | — | — | 3:36.79 | 7 |
| Rio Shirai Chihiro Igarashi Tomomi Aoki Nagisa Ikemoto | 4×200 m freestyle relay | 7:56.00 | 8 Q | — | — | 7:56.31 | 8 |
| Natsumi Sakai Reona Aoki Hiroko Makino Rika Omoto | 4×100 m medley relay | 3:59.87 | 8 Q | — | — | 3:58.14 | 6 |

### Mixed

| Athlete | Event | Heat | Heat | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank |
| Katsumi Nakamura Katsuhiro Matsumoto Rika Omoto Aya Sato Tomomi Aoki* | 4×100 m freestyle relay | 3:25.41 | 7 Q | 3:24.67 AS | 7 |
| Natsumi Sakai Yasuhiro Koseki Naoki Mizunuma Rika Omoto | 4×100 m medley relay | DSQ | DSQ | did not advance | did not advance |
Legend: (*) = Swimmers who participated in the heat only.

## Water polo
### Men's tournament
#### Team roster

* Katsuyuki Tanamura
* Seiya Adachi
* Harukiirario Koppu
* Mitsuaki Shiga
* Takuma Yoshida
* Atsuto Iida
* Yusuke Shimizu
* Mitsuru Takata
* Atsushi Arai
* Yusuke Inaba
* Keigo Okawa (C)
* Kenta Araki
* Tomoyoshi Fukushima
* Coach: Yoji Omoto

#### Group D

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Italy | 3 | 3 | 0 | 0 | 31 | 19 | +12 | 6 | Quarterfinals |
| 2 | Germany | 3 | 1 | 1 | 1 | 31 | 25 | +6 | 3 | Playoffs |
| 3 | Japan | 3 | 1 | 1 | 1 | 27 | 27 | 0 | 3 | Playoffs |
| 4 | Brazil | 3 | 0 | 0 | 3 | 22 | 40 | −18 | 0 | |
| 15 July 2019 20:30 | Report | Germany | 9–9 | Japan | Nambu University Aquatics Center, Gwangju Referees: Michael Goldenberg (USA), Daniel Flahive (AUS) |
| Nambu University Aquatics Center, Gwangju Referees: Michael Goldenberg (USA), Daniel Flahive (AUS) |||
| 15 July 2019 20:30 | Report | Stamm 3 | Goals | Arai 3 | Nambu University Aquatics Center, Gwangju Referees: Michael Goldenberg (USA), Daniel Flahive (AUS) |
| 17 July 2019 16:30 | Report | Japan | 7–9 | Italy | Nambu University Aquatics Center, Gwangju Referees: Sebastien Dervieux (FRA), Jaume Teixidó (ESP) |
| Nambu University Aquatics Center, Gwangju Referees: Sebastien Dervieux (FRA), Jaume Teixidó (ESP) |||
| 17 July 2019 16:30 | Report | Arai, Inaba 2 | Goals | Figlioli 4 | Nambu University Aquatics Center, Gwangju Referees: Sebastien Dervieux (FRA), Jaume Teixidó (ESP) |
| 19 July 2019 11:10 | Report | Brazil | 9–11 | Japan | Nambu University Aquatics Center, Gwangju Referees: Nenad Periš (CRO), Viktor Salnichenko (KAZ) |
| Nambu University Aquatics Center, Gwangju Referees: Nenad Periš (CRO), Viktor Salnichenko (KAZ) |||
| 19 July 2019 11:10 | Report | Guimarães 3 | Goals | Shiga, Yoshida 3 | Nambu University Aquatics Center, Gwangju Referees: Nenad Periš (CRO), Viktor Salnichenko (KAZ) |

#### Playoffs

| 21 July 2019 17:00 | Report | Spain | 15–7 | Japan | Nambu University Aquatics Center, Gwangju Referees: Arkadiy Voevodin (RUS), Dion Willis (RSA) |
| Nambu University Aquatics Center, Gwangju Referees: Arkadiy Voevodin (RUS), Dion Willis (RSA) |||
| 21 July 2019 17:00 | Report | Munarriz 6 | Goals | Adachi 2 | Nambu University Aquatics Center, Gwangju Referees: Arkadiy Voevodin (RUS), Dion Willis (RSA) |

#### 9th–12th place semifinals

| 23 July 2019 11:00 | Report | Montenegro | 14–7 | Japan | Nambu University Aquatics Center, Gwangju Referees: Germán Moller (ARG), Alessandro Severo (ITA) |
| Nambu University Aquatics Center, Gwangju Referees: Germán Moller (ARG), Alessandro Severo (ITA) |||
| 23 July 2019 11:00 | Report | Ivović, Murišić 3 | Goals | Arai, Inaba 2 | Nambu University Aquatics Center, Gwangju Referees: Germán Moller (ARG), Alessandro Severo (ITA) |

#### Eleventh place game

| 25 July 2019 09:30 | Report | Japan | 15–5 | South Africa | Nambu University Aquatics Center, Gwangju Referees: Viktor Salnichenko (KAZ), Juan Menéndez (CUB) |
| Nambu University Aquatics Center, Gwangju Referees: Viktor Salnichenko (KAZ), Juan Menéndez (CUB) |||
| 25 July 2019 09:30 | Report | Shimizu, Inaba 3 | Goals | Evezard 2 | Nambu University Aquatics Center, Gwangju Referees: Viktor Salnichenko (KAZ), Juan Menéndez (CUB) |

### Women's tournament
#### Team roster

* Rikako Miura
* Yumi Arima
* Akari Inaba
* Shino Magariyama
* Chiaki Sakanoue
* Miku Koide
* Maiko Hashida
* Yuki Niizawa
* Minori Yamamoto
* Misaki Noro
* Marina Tokumoto
* Kotori Suzuki (C)
* Minami Shioya
* Coach: Makihiro Motomiya

#### Group D

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Italy | 3 | 3 | 0 | 0 | 33 | 22 | +11 | 6 | Quarterfinals |
| 2 | Australia | 3 | 2 | 0 | 1 | 32 | 29 | +3 | 4 | Playoffs |
| 3 | China | 3 | 1 | 0 | 2 | 26 | 34 | −8 | 2 | Playoffs |
| 4 | Japan | 3 | 0 | 0 | 3 | 20 | 26 | −6 | 0 | |
| 14 July 2019 19:10 | Report | Japan | 6–8 | China | Nambu University Aquatics Center, Gwangju Referees: Gabriella Várkonyi (HUN), Michael Goldenberg (USA) |
| Nambu University Aquatics Center, Gwangju Referees: Gabriella Várkonyi (HUN), Michael Goldenberg (USA) |||
| 14 July 2019 19:10 | Report | Arima 3 | Goals | Chen, Wang X. 2 | Nambu University Aquatics Center, Gwangju Referees: Gabriella Várkonyi (HUN), Michael Goldenberg (USA) |
| 16 July 2019 17:50 | Report | Japan | 7–9 | Italy | Nambu University Aquatics Center, Gwangju Referees: Gabriella Várkonyi (HUN), Arkadiy Voevodin (RUS) |
| Nambu University Aquatics Center, Gwangju Referees: Gabriella Várkonyi (HUN), Arkadiy Voevodin (RUS) |||
| 16 July 2019 17:50 | Report | Arima 3 | Goals | Bianconi 5 | Nambu University Aquatics Center, Gwangju Referees: Gabriella Várkonyi (HUN), Arkadiy Voevodin (RUS) |
| 18 July 2019 11:10 | Report | Japan | 7–9 | Australia | Nambu University Aquatics Center, Gwangju Referees: Gabriella Várkonyi (HUN), Stanko Ivanovski (MNE) |
| Nambu University Aquatics Center, Gwangju Referees: Gabriella Várkonyi (HUN), Stanko Ivanovski (MNE) |||
| 18 July 2019 11:10 | Report | three players 2 | Goals | Buckling 3 | Nambu University Aquatics Center, Gwangju Referees: Gabriella Várkonyi (HUN), Stanko Ivanovski (MNE) |

#### 13th–16th place semifinals

| 20 July 2019 12:00 | Report | Cuba | 9–21 | Japan | Nambu University Aquatics Center, Gwangju Referees: Gabriella Várkonyi (HUN), John Waldow (NZL) |
| Nambu University Aquatics Center, Gwangju Referees: Gabriella Várkonyi (HUN), John Waldow (NZL) |||
| 20 July 2019 12:00 | Report | Bernal 3 | Goals | Arima 5 | Nambu University Aquatics Center, Gwangju Referees: Gabriella Várkonyi (HUN), John Waldow (NZL) |

#### 13th place game

| 22 July 2019 09:30 | Report | South Africa | 2–21 | Japan | Nambu University Aquatics Center, Gwangju Referees: John Waldow (NZL), Ni Shi Wei (CHN) |
| Nambu University Aquatics Center, Gwangju Referees: John Waldow (NZL), Ni Shi Wei (CHN) |||
| 22 July 2019 09:30 | Report | Moir, Hallendorff 1 | Goals | Arima 5 | Nambu University Aquatics Center, Gwangju Referees: John Waldow (NZL), Ni Shi Wei (CHN) |