swimWilliam Zhang
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 100 Freestyle | SCY | 45.96 | AAA+0.47s to AAAA·Futures ✓+1.07s to Winter JNs | 2025-01-01 | 2025 Speedo Winter Junior Championships - West |
| 200 Freestyle | SCY | 1:39.99 | AAAA·Futures ✓+1.60s to Winter JNs | 2025-12-12 | 2025 West Speedo Winter Juniors fast pool |
| 500 Freestyle | SCY | 4:41.91 | AAA+8.32s to AAAA·Sectionals ✓+4.82s to Futures | 2025-03-06 | LAC 2025 Speedo Sectional Championship Series |
| 50 Backstroke | SCY | 24.27 | AAA+1.08s to AAAA·Sectionals ✓+0.58s to Futures | 2025-11-12 | nt Hz9zkqJTTBhC9chx8 |
| 100 Backstroke | SCY | 51.50 | AAA+2.31s to AAAA·Sectionals ✓+0.01s to Futures | 2024-02-10 | 2024 6A - 1 Regional Meet slow pool |
| 200 Backstroke | SCY | 1:59.66 | A+1.07s to AA·Sectionals ✓+6.87s to Futures | 2023-03-03 | 2023 SE Speedo Southern Premier |
| 50 Butterfly | SCY | 22.89 | AAAA·Futures ✓+0.90s to Jr Nationals | 2025-11-12 | nt Hz9zkqJTTBhC9chx8 |
| 100 Butterfly | SCY | 49.82 | AAA+0.63s to AAAA·Futures ✓+1.13s to Winter JNs | 2025-12-12 | 2025 West Speedo Winter Juniors fast pool |
| 200 Butterfly | SCY | 1:49.78 | AAAA·Futures ✓+0.69s to Winter JNs | 2025-12-13 | 2025 West Speedo Winter Juniors fast pool |
| 200 Individual Medley | SCY | 2:01.53 | A+0.04s to AA·+2.14s to Sectionals | 2023-03-03 | 2023 SE Speedo Southern Premier |
| 100 Freestyle | LCM | 53.15 | AAA+0.46s to AAAA·Futures ✓+0.56s to Winter JNs | 2025-07-31 | 2025 Jrs Time Trials fast pool |
| 50 Backstroke | LCM | 29.52 | AA+0.23s to AAA·Sectionals ✓+1.63s to Futures | 2025-07-30 | 2025 Speedo Junior National Championships fast pool |
| 50 Butterfly | LCM | 26.36 | AAA+0.27s to AAAA·Sectionals ✓+0.07s to Futures | 2025-08-02 | 2025 Speedo Junior National Championships fast pool |
| 100 Butterfly | LCM | 56.87 | AAA+0.58s to AAAA·Futures ✓+0.38s to Winter JNs | 2025-08-01 | 2025 Jrs Time Trials fast pool |
| 200 Butterfly | LCM | 2:05.30 | AAAA·Winter JNs ✓+0.21s 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 |
|---|---|---|---|---|---|---|
| 100 Freestyle | SCY | 56.25 | flying | 400 Free Relay (leg 4) | 2020-03-06 | 2020 Short Course TAGS Championships |
| 200 Freestyle | SCY | 1:38.23 | flying | 800 Free Relay (leg 3) | 2025-12-10 | 2025 West Speedo Winter Juniors |
| 100 Backstroke | SCY | 1:04.57 | flat | 400 Medley Relay | 2020-03-08 | 2020 Short Course TAGS Championships |
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
3387 points (4/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 4:41.91 | 902 |
| 200 BK SCY | 1:59.66 | 732 |
| 200 FL SCY | 1:49.78 | 1000 |
| 200 IM SCY | 2:01.53 | 753 |
| 200 BR SCY | — | 0 |
| 400 IM SCY | — | 0 |
IMR 17-18 · SCY
3570 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:39.99 | 1006 |
| 100 BK SCY | 51.50 | 855 |
| 100 FL SCY | 49.82 | 956 |
| 200 IM SCY | 2:01.53 | 753 |
| 100 BR SCY | — | 0 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 45.96
Front half 22.36s · back half 23.60s
200 Freestyle SCY 1:39.99
Front half 49.52s · back half 50.47s
500 Freestyle SCY 4:41.91 split/total mismatch
100 Backstroke SCY 51.50
Front half 24.78s · back half 26.72s
100 Butterfly SCY 49.82
Front half 23.44s · back half 26.38s
200 Butterfly SCY 1:49.78
Front half 52.22s · back half 57.56s
100 Freestyle LCM 53.15 RT 0.68s
Front half 25.82s · back half 27.33s
100 Butterfly LCM 56.87 RT 0.68s
Front half 26.47s · back half 30.40s
200 Butterfly LCM 2:05.30 RT 0.75s
Front half 58.68s · back half 66.62s
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.