2025 TYR Pro Swim Series — Westmont
Michael Andrew won the men’s 100 breaststroke in this morning’s prelims, swimming 1:00.65 to come in a little more than a second ahead of the rest of the field, but about two-and-a-half seconds off his American record time of 58.14. The most notable part of his swim was not the time or the place, it was the fact that for maybe the first time ever, Andrew had the fastest 2nd 50 split in the field.
Men’s 100 Breaststroke – Prelims
- World Record: 56.88 – Adam Peaty, GBR (2019)
- World Junior Record: 59.01 – Nicolo Martinenghi, ITA (2017)
- American Record: 58.14 – Michael Andrew (2021)
- U.S. Open Record: 58.14 – Michael Andrew, USA (2021)
- Pro Swim Record: 58.86 – Adam Peaty, GBR (2017)
Top 8
- Michael Andrew (SUN) – 1:00.65
- Garrett Clasen (FMC) – 1:01.78
- AJ Pouch (PRVT) – 1:02.32
- Apollo Hess (CAN) – 1:02.46
- Joao Rodrigues (GTCH) -1:02.56
- Michael Houlie (TNAQ) – 1:02.69
- Dante Nicola Rho (MCK) – 1:02.72
- Uros Zivanovic (GTCH) – 1:03.13
Michael Andrew has been well known for his opening speed and his struggles to close out his races in the same capacity. This appears most frequently in his 200 IM, where he has been under world record pace at the 150 mark a number of times, but he falls off the pace in the last 50.
We might be seeing a new era of Andrew’s swimming, however, ushered in by his new training regimen under ASU head coach Herbie Behm. In this morning’s 100 breaststroke, Andrew split 32.26 on the 2nd 50, almost seven tenths faster than the 2nd fastest swimmer in the field who swam a split of 32.92.
In the last two years, Andrew has been between faster than 1:01.00 15 times, not counting today. Today’s time would rank 14th out of 16. If we ranked just the final 50 splits, it would be 6th. Four of the five times where he has been faster on the 2nd 50 were under 1:00.
Andrew’s 2nd 50 splits from every 100 breast under 1:01 in the last two years:
| Meet | 1st 50 | 2nd 50 | Final Time |
| 2025 TYR Pro Swim Series- Westmont- Prelims | 28.39 | 32.26 | 1:00.65 |
| 2024 Olympic Trials- Finals | 27.73 | 32.38 | 1:00.11 |
| 2024 Olympic Trials- Semis | 27.57 | 32.08 | 59.65 |
| 2024 Olympic Trials- Prelims | 27.38 | 32.34 | 59.72 |
| 2024 CA Trojan Aquatic Los Angeles Invite- Finals | 27.77 | 32.10 | 59.87 |
| 2024 CA Trojan Aquatic Los Angeles Invite- Finals | 27.93 | 32.49 | 1:00.42 |
| 2024 TYR Pro Series- San Antonio- Finals | 27.93 | 32.39 | 1:00.32 |
| 2024 TYR Pro Series- San Antonio- Prelims | 27.87 | 32.35 | 1:00.22 |
| 2024 Finale Giant Open | 27.74 | 32.48 | 1:00.22 |
| 2024 Meeting Nice Camille Muffat- Giant Series- Finals | 27.95 | 32.90 | 1:00.85 |
| 2024 Meeting Nice Camille Muffat- Giant Series- Semifinals | 27.94 | 31.88 | 59.82 |
| 2024 TYR Pro Swim Series- Knoxville- Finals | 27.79 | 32.62 | 1:00.41 |
| 2024 TYR Pro Swim Series- Knoxville- Prelims | 27.85 | 32.29 | 1:00.14 |
| 2023 U.S. Open- Finals | 27.74 | 31.78 | 59.52 |
| 2023 U.S. Open- Prelims | 28.24 | 31.94 | 1:00.18 |
| 2023 TYR Pro Series- Ft. Lauderdale | 27.41 | 32.57 | 59.98 |
| 2023 TYR Pro Series- Ft. Lauderdale | 28.39 | 32.51 | 1:00.90 |
While Andrew was faster on the back 50 than most of these times, his first 50 was tied for the slowest. It will be interesting to watch in tonight’s finals how he navigates his faster back 50 speed with his usual front end speed.
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