2025 World Championships
- July 27 – August 3, 2025 (pool swimming)
- Singapore, Singapore
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MIXED 4X100 MEDLEY RELAY – FINAL
- World Record: 3:37.43, United States – 2024
- World Junior Record: 3:44.84, United States – 2019
Championship Record: 3:38.56, United States – 2017- 2023 World Champion: China, 3:38.57
- 2024 Olympic Champion: United States, 3:37.43
- Neutral Athletes B, 3:37.97
- China, 3:39.99
- Canada, 3:40.90
- Netherlands, 3:40.97
- Australia, 3:41.02
- Italy, 3:42.19
- Japan, 3:44.15
- Poland, 3:44.27
With three of the Olympic finalists missing from the final, led by the absence of the world record holder and Olympic Champions, the United States, this relay was bound to be a topsy turvey event, but in fact, at least for the winners, it was rather straight forward as the Neutral Athlete B Team, comprised of swimmers from the Russian Federation, built such a lead on the front two legs that no one could run them down. Their winning time of 3:37.97, was clear of the field by over two seconds and clocks in as the 4th fastest performance of all time.
Backstroke Leg
| Rank | Swimmer | Country | Time (Place) |
|---|---|---|---|
| 1 | Miron Lifintsev | Neutral Athletes | 51.78 (1) |
| 2 | Christian Bacico | Italy | 52.78 (2) |
| 3 | Ksawery Masiuk | Poland | 53.19 (3) |
| 4 | Xu Jiayu | China | 53.23 (4) |
| 5 | Riku Matsuyama | Japan | 54.01 (5) |
| 6 | Kai van Westering | Netherlands | 54.03 (6) |
| 7 | Kaylee McKeown | Australia | 57.65 (7) |
| 8 | Kylie Masse | Canada | 58.69 (8) |
You can read more about Miron Lifintsev‘s swim here, but the 20-year-old blew away the competition and gave his team a lead that was never in danger of being relinquished. After placing 7th in the individual event with a time of 52.51, the Junior World Record Holder, blasted out to the front in 24.60 and closed in 27.18, splitting 51.78. His time not only would have won the individual 100 backstroke event, but it could become the 2nd fastest performance ever, pending verification.
In relation to this relay, the Italians opted not to use Thomas Ceccon, the World record holder and winner of the silver medal in the event. Christian Bacico was 52.68 this morning and was just a tenth slower this evening, but with Lifintsev a full second faster and in an outside lane the NAB team had clean water to both sides.
Only two teams opted for a female backstroker, with the winner of the 100 back, Kaylee McKeown, opening things off for the Australians, and Kylie Masse, who placed 4th in the individual event, kicking things off for the Canadians. The pair, both former WR holders in the 100 back, were a little slower than their times earlier in the week, with the Aussie going from 57.16, her new PB, to 57.65 tonight, while the Canadian’s drop off was a little, going from 58.42 to 58.69.
Breaststroke Leg
| Rank | Swimmer | Country | Time |
|---|---|---|---|
| 1 | Kirill Prigoda | Neutral Athletes | 57.56 (1) |
| 2 | Qin Haiyang | China | 58.14 (2) |
| 3 | Nicolo Martinenghi | Italy | 58.63 (3) |
| 4 | Caspar Corbeau | Netherlands | 58.74 (4) |
| 5 | Oliver Dawson | Canada | 59.63 (7) |
| 6 | Taku Taniguchi | Japan | 59.48 (5) |
| 7 | Nash Wilkes | Australia | 59.98 (6) |
| 8 | Dominika Sztandera | Poland | 1:06.53 (8) |
We can’t compare Kirill Prigoda’s time on this relay to his time in the individual event as he was disqualified in the final, but his performance this evening is certainly a strong improvement on the 59.36 that qualified him 8th into the final. With a strong lead of the Italians, Prigoda only added to it as he split a blistering 57.56 to give his team an over two-second lead on the Chinese, who, despite using the 2025 World Champion Qin Haiyang, started to fall further back, as Qin split 58.14. Qin did have the 50 breaststroke final before this race, but so did Prigoda, who outouched him in that race .05. Italy’s Nicolo Martinenghi did not have the 50, but the Olympic Champion and recent silver medalist in the event could not match his rivals’ speeds, and the Italians slipped from 2nd to 3rd.
Only one team opted to use a female breaststroker, with the Poles selecting Dominka Sztandera to fill the role. She finished 15th in the semifinals of the event with a time of 1:07.34, but split a commendable 1:06.53, just a little off her 1:06.20 from this morning.
Butterfly Leg
| Rank | Swimmer | Country | Time |
|---|---|---|---|
| 1 | Josh Liendo | Canada | 49.64 (4) |
| 2 | Matthew Temple | Australia | 50.26 (3) |
| 3 | Jakub Majerski | Poland | 50.72 (8) |
| 4 | Zhang Yufei | China | 55.96 (2) |
| 5 | Daria Klepikova | Neutral Athletes | 55.97 (1) |
| 6 | Tessa Giele | Netherlands | 56.29 (5) |
| 7 | Mizuki Hirai | Japan | 56.78 (7) |
| 8 | Costanza Cocconcelli | Italy | 57.90 (6) |
Freestyle Leg
| Rank | Swimmer | Country | Time (Place) |
|---|---|---|---|
| 1 | Marrit Steenbergen | Netherlands | 51.91 (4) |
| 2 | Daria Trofimova | Neutral Athletes | 52.66 (1) |
| =2 | Qingfeng Wu | China | 52.66 (2) |
| 4 | Sara Curtis | Italy | 52.88 (6) |
| 5 | Taylor Ruck | Canada | 52.94 (3) |
| 6 | Milla Jansen | Australia | 53.13 (5) |
| 7 | Nagisa Ikemoto | Japan | 53.88 (7) |
| 8 | Katarzyna Wasick | Poland | 53.83 (8) |
Daria Trofimova entered the water with a lead of 2.02, and the writing was on the wall as that gap seemed to be too insurmountable to conquer, but Marrit Steenbergen of the Netherlands gave it her best shot as she opened in 24.42 and closed in 27.49 to record the only sub-52 split of 51.91. However, Trofimova, who entered the water ahead of the WR set by the USA last summer, was not that much slower as she opened in 24.83 and came home in 27.83, splitting 52.66, the 2nd fastest in the field, to take the win, a new national record and championship record for her team.
China’s Wu Qingfeng equalled Trofimova’s split of 52.66 and maintained her nation’s position, helping collect the silver medal for the team. The Australians had a bevy of options to use on the anchor leg and selected Milla Jansen. Jansen split 53.13, which was a little off her 52.89 from the women’s 4×100 free, while Taylor Ruck, who was 53.37 on Canada’s prelims 4×100 free relay, improved, and her 52.94 made all the difference as she ran down the Australian and secured the bronze medal for her team in a new national record of 3:40.97.
The Canadians were not the only team to rewrite their record books. The Russian/NAB team did as the Dutch did, passing the Australians for 4th place in the closing meters.

Why didnt us Aussies put in someone stronger for the Anchor 100 free leg? Meg Harris perhaps? We could have won silver or bronze surely. And if not for Nash Wilkes atrocious breast leg, we definitely wouldve been a sure thing for silver minimum. At least kaylee put in a great performance, swimming a brilliant 57-mid while fighting against waves of men all around her.
Presumably Meg didn’t make herself available and Mollie had the 200 earlier in the session.
USA better not blame this terrible world champs on the sickness. Don’t get me wrong, it affected some races and they’ve had some good races, but on the whole it wouldn’t have changed their terrible medal table by much. They better get their butts in gear for 2028 and lock in.
What an insightful comment. You sound super intelligent.
That was wild. In the end USA missing didn’t really matter because they weren’t ever beating that time
Silver medals are still valuable
Has Minakov competed yet? I haven’t noticed him at all. If he’s on form they look like strong favourites in the men’s medley.
I think he was in the 100 free prelims and didn’t advance.
These guys would have won a bunch of races in Paris.
where is the United States?
Exactly.
Just north of Mexico
China’s back and breast legs could have been a combined 1.5 seconds faster and could have given fly and free legs cleaner water.
I still don’t think there is any mathematical way the U.S. could have won even if they qualified. Our men’s back and breast legs are both too weak and you need to have at least one male swimmer in the front half.