2025 World Championships
- July 27 – August 3, 2025 (pool swimming)
- Singapore, Singapore
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Men’s 4×100 Medley Relay — Final
- World Record: 3:26.78 — United States (Murphy, Andrew, Dressel, Apple) (2021)
- World Junior Record: 3:33.19 — Russia (Zurev, Gerasimenko, Minakov, Shchegolev) (2019)
Championship Record: 3:27.20 — United States (Murphy, Fink, Rose, Alexy) (2023)- 2023 World Champion: United States (Murphy, Fink, Rose, Alexy) — 3:27.20
- 2024 Olympic Champion: China (Xu, Qin, Sun, Pan) — 3:27.46
Final:
- Neutral Athletes – B (Lifintsev, Prigoda, Minakov, Kornev) – 3:26.93 *Championship Record*
- France (Ndoye-Brouard, Marchand, Grousset, le Goff) – 3:27.96
- USA (Janton, Matheny, Rose, Alexy) – 3:28.62
- Italy – 3:28.72
- Canada – 3:29.75
- Great Britain – 3:30.63
- South Korea – 3:32.32
- Netherlands – 3:32.35
Canada reset their National Record for the second time today in the men’s 4×100 medley relay in the final tonight, finishing 5th in 3:29.75. That was more than a second faster than they went this morning, and they have hacked 1.27 seconds off the supersuited record which had stood since 2009 over the course of the day.
Blake Tierney‘s emergence on backstroke was huge for the front half of this relay, and he was just off his brand-new Canadian Record in the 100 backstroke from the heats, touching in 53.03 for the 5th-fastest leadoff in the field.
Oliver Dawson swam his third 59-point split of the meet, having come in with a lifetime best of 1:00.78. After he dropped a big new best in the 200 breast as well, Canada may have found the breaststroker they needed for this relay.
However, it was the final two swimmers who really elevated this relay. Ilya Kharun added his second 49-point fly split of the day, going slightly faster than in prelims with a swim of 49.83 that featured a 22.76 opening 50. He now has two swims within the top-15 all-time, matching his teammate Josh Liendo.
Liendo was the man on the anchor leg after replacing Ruslan Gaziev, and broke 47 seconds for the first time ever to go 46.90. The two combined for the third-fastest back half in the field in 1:36.73, just behind the U.S. (1:36.25) and NAB (1:36.57).
| New Record – 2025 World Championships heats | Old Record – 2025 World Championships heats | Previous Record – 2009 World Championships heats | |
| Backstroke | Blake Tierney – 53.03 | Blake Tierney – 52.95 | Pascal Wollach – 53.90 |
| Breaststroke | Oliver Dawson – 59.99 | Oliver Dawson – 1:00.18 | Mathieu Bios – 58.86 |
| Butterfly | Ilya Kharun – 49.83 | Ilya Kharun – 49.98 | Joe Bartoch – 51.39 |
| Freestyle | Josh Liendo – 46.90 | Ruslan Gaziev – 47.75 | Brent Hayden – 46.87 |
| 3:29.75 | 3:30.86 | 3:31.02 |
Compared to the previous record the big difference makers were Tierney and Kharun, with the latter’s fly split more than a second and a half quicker than Joe Bartoch‘s 51.39. Liendo was actually a few hundredths slower than Brent Hayden‘s 46.87, and Dawson was around a second off Mathieu Bois’ 58.86 split, although he had split 59.63 earlier this week.
This was the second relay record of the week for Team Canada, as they broke their mixed medley relay mark from 2019 with the 3:40.90 they swam to win bronze in that event. Liendo and Dawson were both on that relay, with Dawson on breaststroke and Liendo on fly.
This was 1.52 seconds faster than Canada swam last summer in Paris, where they finished 6th in 3:31.27. Oliver Dawson was the only new swimmer this year, and all three of the retained swimmers were faster than last year by at least half a second.
I believe Tierney was a hockey player and only a part time swimmer til he was a teenager, finally deciding on swimming in high school.Explains why he was relatively unheard of as an age grouper.Sure seems to be picking up this swimming thing lately.
So many potential swimmers in Canada wasting their time on frozen water!
Dont denigrate the ice mile swim…. Its a big deal up here!
Are you Canadasplaining to me? Lol
Super impressive young team! Blake Tierney dropped personal bests and Canadian records almost every time he entered the pool. Just impressive stuff by the youngster!
Being a breaststroker away from competitive was NOT on my bingo card for 2025, or ever really. LFG boys!!!
Yeah, if Dawson makes the jump from 1:00.x to 59.0 over the next few years, they’re dangerous. That’s a tough jump, but he is only 17, and did split under 1:00 on a relay here.
Super young team too. Canada’s men’s team has some pep to it for the first time in a decade