swimSherwin Xu
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 21.49 | AAA+0.80s to AAAA·Sectionals ✓+0.20s to Futures | 2025-01-01 | 2025 Speedo Winter Junior Championships - West |
| 100 Freestyle | SCY | 48.46 | AA+0.77s to AAA·+0.17s to Sectionals | 2023-03-03 | 2023 SE Speedo Southern Premier |
| 50 Breaststroke | SCY | 31.27 | BB+0.68s to A·+1.78s to Sectionals | 2020-03-08 | 2020 Short Course TAGS Championships venue |
| 100 Breaststroke | SCY | 1:06.81 | BB+2.62s to A·+4.12s to Sectionals | 2020-03-06 | 2020 Short Course TAGS Championships venue |
| 50 Butterfly | SCY | 24.02 | AAA+0.83s to AAAA·Sectionals ✓+1.13s to Futures | 2026-03-05 | LAC Spring Speedo Sectionals |
| 100 Butterfly | SCY | 48.49 | AAAA·Winter JNs ✓+0.30s to Jr Nationals | 2026-03-05 | LAC Spring Speedo Sectionals |
| 200 Butterfly | SCY | 1:50.61 | AAAA·Futures ✓+1.52s to Winter JNs | 2025-01-01 | 2025 Speedo Winter Junior Championships - West |
| 100 Individual Medley | SCY | 1:01.16 | 2020-03-06 | 2020 Short Course TAGS Championships venue | |
| 200 Individual Medley | SCY | 2:00.53 | AA+4.34s to AAA·+1.14s to Sectionals | 2023-03-03 | 2023 SE Speedo Southern Premier |
| 400 Individual Medley | SCY | 4:13.19 | AA+2.40s to AAA·+1.20s to Sectionals | 2023-03-03 | 2023 SE Speedo Southern Premier |
| 50 Butterfly | LCM | 25.56 | AAAA·Futures ✓+0.17s to Jr Nationals | 2025-08-02 | 2025 Speedo Junior National Championships fast pool |
| 100 Butterfly | LCM | 55.67 | AAAA·Jr Nationals ✓+0.98s to Nationals | 2025-08-01 | 2025 Speedo Junior National Championships fast pool |
| 200 Butterfly | LCM | 2:06.02 | AAA+0.13s to AAAA·Winter JNs ✓+0.93s to Jr Nationals | 2025-07-30 | 2025 Speedo Junior National Championships fast pool |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 18.
National cuts (Sectionals → Nationals) are the current-season meet qualifying times for the swimmer's zone and age group; ✓ marks the hardest cut already achieved.
Pool tags are a venue speed heuristic (median deviation of all swims there vs each swimmer's typical time) — see the venue page for the method.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Butterfly | SCY | 21.87 | flying | 200 Medley Relay (leg 3) | 2025-12-10 | 2025 West Speedo Winter Juniors |
| 100 Butterfly | SCY | 48.81 | flying | 400 Medley Relay (leg 3) | 2025-12-11 | 2025 West Speedo Winter Juniors |
Reconstructed from relay split marks. Flat = lead-off (comparable to individual times); flying starts run ~0.5–0.7s fast and are not PRs.
IMX / IMR
IMX 17-18 · SCY
2579 points (3/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FL SCY | 1:50.61 | 977 |
| 200 IM SCY | 2:00.53 | 772 |
| 400 IM SCY | 4:13.19 | 830 |
| 500 FR SCY | — | 0 |
| 200 BK SCY | — | 0 |
| 200 BR SCY | — | 0 |
IMR 17-18 · SCY
2397 points (3/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BR SCY | 1:06.81 | 588 |
| 100 FL SCY | 48.49 | 1037 |
| 200 IM SCY | 2:00.53 | 772 |
| 200 FR SCY | — | 0 |
| 100 BK SCY | — | 0 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Breaststroke SCY 1:06.81
Front half 32.10s · back half 34.71s
100 Butterfly SCY 48.49 split/total mismatch
100 Individual Medley SCY 1:01.16
Front half 28.30s · back half 32.86s
100 Butterfly LCM 55.67 RT 0.62s
Front half 25.96s · back half 29.71s
200 Butterfly LCM 2:06.02 RT 0.66s
Front half 59.25s · back half 66.77s
Reaction time
From electronically-timed starts only (~2% of corpus swims carry a reaction time). PRs with a recorded reaction show an RT chip in the splits section above.
Progression
Faster times are higher. One card per event, all courses & history.