By Sean Griffin on SwimSwam
2025 Pro Swim Series – Fort Lauderdale
Wednesday, April 30 – Saturday, May 3, 2025 Fort Lauderdale, Florida Fort Lauderdale Aquatic Center LCM (50 meters) Meet Central Psych Sheets Live Results Live Recaps Prelims: Day 2 | Day 3 Finals: Day 1 (Timed Finals) | Day 2 | Day 3During the third finals session of the 2025 Pro Swim Series stop in Fort Lauderdale, 22-year-old Gretchen Walsh delivered a sensational swim in the 50 butterfly, clocking 24.93 to break her own American record, top the world rankings, set a new Pro Swim Series record, and become the second woman in history to ever break the 25-second threshold.
Prior to today, Walsh ranked 4th on the all-time performers list in the event, tied with Japan’s Rikako Ikee at 25.11.
Walsh’s swim tonight seemed imminent after she scorched a 25.15 in prelims, erasing Farida Osman‘s six-year-old Pro Swim Series record of 25.65 and nearly surpassing her own now-shattered American record.
Walsh joins Swedish world record holder Sarah Sjostrom under 25 seconds, marking a major milestone. Walsh’s time tonight checks in as the 13th fastest ever recorded in the event’s history. Previously, Sjostrom, the six-time defending world champion who is sitting out this season after announcing her pregnancy, held the top 24 individual performances in this event. However, following Walsh’s performance, Sjostrom now holds the top 12 times.
You can view the full list of the quickest-ever times below.
Women’s 50 LCM Butterfly, Top 30 Performances All-Time:
Rank Time Swimmer Year 1 24.43 Sarah Sjostrom (SWE) 2014 2 24.60 Sarah Sjostrom (SWE) 2017 3 24.63 Sarah Sjostrom (SWE) 2024 4 24.69 Sarah Sjostrom (SWE) 2015 5 24.74 Sarah Sjostrom (SWE) 2023 6 24.76 Sarah Sjostrom (SWE) 2017 7 24.77 Sarah Sjostrom (SWE) 2023 8 24.79 Sarah Sjostrom (SWE) 2019 9 24.87 Sarah Sjostrom (SWE) 2014 10 24.88 Sarah Sjostrom (SWE) 2024 11 24.89 Sarah Sjostrom (SWE) 2023 12 24.90 Sarah Sjostrom (SWE) 2017 13 24.93 Gretchen Walsh (USA) 2025 14 24.95 Sarah Sjostrom (SWE) 2022 14 24.95 Sarah Sjostrom (SWE) 2017 16 24.96 Sarah Sjostrom (SWE) 2015 16 24.96 Sarah Sjostrom (SWE) 2017 16 24.96 Sarah Sjostrom (SWE) 2022 19 24.97 Sarah Sjostrom (SWE) 2023 20 24.98 Sarah Sjostrom (SWE) 2014 21 24.99 Sarah Sjostrom (SWE) 2016 22 25.02 Sarah Sjostrom (SWE) 2017 22 25.02 Sarah Sjostrom (SWE) 2019 24 25.04 Sarah Sjostrom (SWE) 2023 24 25.04 Sarah Sjostrom (SWE) 2023 26 25.05 Zhang Yufei (CHN) 2023 26 25.05 Sarah Sjostrom (SWE) 2022 28 25.06 Sarah Sjostrom (SWE) 2015 28 25.06 Sarah Sjostrom (SWE) 2023 30 25.07 Sarah Sjostrom (SWE) 2023 30 25.07 Sarah Sjostrom (SWE) 2018 30 25.07 Sarah Sjostrom (SWE) 2015 30 25.07 Sarah Sjostrom (SWE) 2016 30 25.07 Therese Alshammar (SWE) 2009Women’s 50 LCM Butterfly, Top 10 Performers All-Time:
24.43 — Sarah Sjostrom (Sweden), 2014 24.93 — Gretchen Walsh (USA), 2025* 25.05 — Zhang Yufei (China), 2023 25.07 — Therese Alshammar (Sweden), 2009 25.11 — Rikako Ikee (Japan), 2018 25.17 — Melanie Henique (France), 2021 25.20 — Francesca Halsall (Great Britain), 2014 25.24 — Jeanette Ottesen (Denmark), 2013 25.24 — Ranomi Kromowidjojo (Netherlands), 2021 25.28 — Marleen Veldhuis (Netherlands), 2009Todd Desorbo-trained Walsh made waves last night with her first-ever sub-53 performance in the 100 free. Clocking 52.90, Walsh defeated the Olympic silver medalist in the event, Torri Huske (52.95), and Kate Douglass, the 2023 U.S. National Champion and 2024 U.S. Olympic Trials winner (53.61).
Outside of the long course pool, Walsh has firmly established herself as the top short course swimmer on the planet. While her dominance in short course yards was already evident during her standout career at the University of Virginia, she finally had the opportunity to showcase that ability in short course meters last year—and did so in spectacular fashion..
She exploded at the Short Course World Championships this past December. There, she earned seven gold medals, set 11 world records across six different events (including two relays), and rewrote the record books in the 50 free (22.83), 50 fly (23.94), 100 fly (52.71), and 100 IM (55.11). She also posted the second-fastest time ever in the 100 free at 50.31.
Walsh’s big breakout on the long course international stage began at the 2024 U.S. Olympic Trials, where she opened with a world record in the 100 fly (55.18) and followed it with a 55.31 in the final—the second-fastest performance in history—to secure her place on the Olympic team. She also qualified in the 50 and 100 free events. At the Paris Games, she claimed silver in the 100 fly (55.63, behind Huske), finished 4th in the 50 free (24.21), and touched 8th in the 100 free (53.04). She also earned three relay medals: two golds in the women’s 4×100 medley and mixed 4×100 medley relays, and one silver in the 4×100 free relay.
Walsh enters this season as a strong contender for gold in the 50 fly at the World Championships, a co-favorite with teammate Huske in the 100 fly, and a serious medal threat in both sprint free events. Her 2024 world rankings reflect this status: #1 in the 100 fly (55.18), #2 in the 50 fly (25.20), #6 in the 50 free (24.06), and #12 in the 100 free (53.04).
Walsh’s Post-Race Interview with SwimSwam:
Read the full story on SwimSwam: Gretchen Walsh Clocks 24.93 In 50 Fly, Becomes 2nd Woman In History To Break 25 Seconds
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