2025 U.S. NATIONAL CHAMPIONSHIPS
- Tuesday, June 3 – Saturday, June 7, 2025
- Indianapolis, Indiana
- Indiana University Natatorium
- LCM (50 meters)
- World Championship Selection Criteria
- SwimSwam Preview Index
- Meet Central
- Psych Sheets
- Live Results
- Day 1 Prelims Live Recap
Jack Alexy threw down the gauntlet in the final heat of the men’s 100 freestyle during the opening session of the 2025 U.S. National Championships on Tuesday, blasting his way to a stunning time of 46.99.
The swim for Alexy lands him in the exclusive sub-47 club, becoming just the sixth swimmer in history to clock 46-point from a flat start in the 100 free,.
The 22-year-old knocks nine one-hundredths off the U.S. Open and National Championship Record of 47.08, which was also his previous best time, set in the prelims at the 2024 U.S. Olympic Trials last summer.
Split Comparison
| Alexy, 2024 Olympic Trials Prelims | Alexy, 2025 U.S. Nationals Prelims |
| 22.44 | 22.45 |
| 47.08 (24.64) | 46.99 (24.54) |
After ranking tied for 8th all-time in the 100 free with his previous best time, Alexy moves into #6 all-time, coming within three one-hundredths of Caeleb Dressel‘s American Record of 46.96 from 2019.
All-Time Performers, Men’s 100 Freestyle (LCM)
- Pan Zhanle (CHN), 46.40 – 2024 Olympic Games
- David Popovici (ROU), 46.86 – 2022 European Championships
- Cesar Cielo (BRA), 46.91 – 2009 World Championships
- Alain Bernard (FRA), 46.94 – 2009 French National Championships
- Caeleb Dressel (USA), 46.96 – 2019 World Championships
- Jack Alexy (USA), 46.99 – 2025 U.S. National Championships
- Cameron McEvoy (AUS), 47.04 – 2016 Australian Olympic Trials
- Eamon Sullivan (AUS), 47.05 – 2008 Australian Olympic Trials
- Kyle Chalmers (AUS), 47.08 – 2019 World Championships
- James Magnussen (AUS) / Gui Caribe (BRA), 47.10 – 2012 Australian Olympic Trials / 20225 Brazilian Nationals
RACE VIDEO
Courtesy of SWIMNERD on X
Alexy 46.99
Fast morning all around!
🇺🇸🇺🇸🇺🇸🇺🇸pic.twitter.com/ujtyFTkALw
— SWIMNERD (@SwimNerds) June 3, 2025
The performance is his 13th career swim sub-48, having done so for the first time at the 2023 U.S. Nationals (47.75), which led him to winning silver in the 100 free at the 2023 World Championships in a time of 47.31. He also won silver in the 50 free and added three more relay medals in Fukuoka, including a gold medal in the men’s 4×100 medley relay.
At the 2024 Olympic Trials, after his record-breaking 47.08 prelim swim, Alexy went on to finish 2nd in the 100 free final (47.47) to earn an individual berth on his first Olympic team, ultimately placing 7th in the Paris final while winning Olympic medals in the men’s 4×100 free relay (gold) and the men’s 4×100 medley relay (silver).
This past March, Alexy wrapped up his college career at Cal, placing 4th in the 100 free and 5th in both the 50 and 200 free at the 2025 Men’s NCAA Championships.
He heads into tonight’s 100 free final in Indianapolis leading a strong field that saw four other swimmers dip under the 48-second barrier this morning, with Cal training partner Destin Lasco (47.82), the Arizona State duo of Jonny Kulow (47.84) and Patrick Sammon (47.87), and 2024 Olympic Trials winner Chris Guiliano (47.96) also going sub-48.
Guys, just remember that Alexy doesn’t need to be 46.8, or 47.2 or 47.0 in the finals.
Grant House just needs to go slower than whatever the 6th place time is
Pan zhanle was 16th out of prelims at the Olympics if I remember correctly. I support alexy not holding back in prelims to avoid missing a final.
It’s impressive how fast his time was with how slow his start and UW were compared to the field. If he wants to beat Pan then that could be an area to clean up. I get that Alexy is tall but Casas isn’t much shorter and he smoked him to the 15.
Excited to have a US man back under 47 so soon after Dressel. I won’t be surprised if Chris G gets there at some point in his career too.
bruh hes tryibg to act like hes not tired again
So no one is going to mention Dave Selo and Herbie Behm and the work they are doing with ASU sprinters?
Plenty mentioned it in the main thread this morning. Not a Cal fan but they are the program with the top two seeds tonight. Happy to see ASU is continuing to perform well post Bob though.
happy that college swimming is over cuz I think Alexy is going to be our sprinting superstar for 2028
Can’t go 3x rounds and falls away through big meets.
One and done kinda guy!
2023 WC 100 free silver medalist
47.5-47.6-47.9 and not invited to medley relay final most recently.
It’s not a criticism, it is simply an observation of some facts…
‘Murica
He’s very young for a sprinter. Give him time, dude.
Is he though? Every guy above him wearing a textile suit in the all time list was younger.
“This guy just went 46.9 in the 100 free, time to get on my computer in my moms basement and start hating”
If he breaks the world record in the final he should lie and say he did it with a Zyn in his mouth so Peter Thiel and the Enhanced Games have to give him $1,000,000.
Almost choked on my lunch at work reading this lmfaooo.