swimWilliam Yao
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 25 Freestyle | SCY | 21.44 | 2024-09-07 | 2024 CA FAC September Intrasquad SC Meet venue | |
| 50 Freestyle | SCY | 36.22 | B+1.43s to BB | 2026-03-07 | 2026 CA FAC A/BB/B Age Group Champs Qualifier venue |
| 100 Freestyle | SCY | 1:23.25 | B+3.96s to BB | 2025-09-28 | 2025 CA RAA AB/C SC Meet venue |
| 200 Freestyle | SCY | 3:05.66 | B+14.97s to BB | 2025-11-02 | 2025 CA The Claremont Club B/C SC Meet venue |
| 25 Backstroke | SCY | 24.02 | 2024-11-17 | 2024 CA FAC November Novice Meet venue | |
| 50 Backstroke | SCY | 42.20 | BB+4.41s to A | 2026-01-31 | 2026 CA Eastern Committee Winter SCY Champs fast pool |
| 25 Breaststroke | SCY | 26.33 | 2024-09-07 | 2024 CA FAC September Intrasquad SC Meet venue | |
| 50 Breaststroke | SCY | 41.98 | A+1.79s to AA | 2026-03-14 | 2026 SCS Spring Age Group Champs @ RMDA - cop venue |
| 100 Breaststroke | SCY | 1:34.21 | BB+2.52s to A | 2026-02-14 | 2026 CA TCC BB/B/C Short Course Meet venue |
| 25 Butterfly | SCY | 26.43 | 2024-09-07 | 2024 CA FAC September Intrasquad SC Meet venue | |
| 50 Butterfly | SCY | 40.99 | BB+4.90s to A | 2026-01-31 | 2026 CA Eastern Committee Winter SCY Champs fast pool |
| 100 Butterfly | SCY | 1:27.29 | BB+2.70s to A | 2026-03-14 | 2026 SCS Spring Age Group Champs @ RMDA - cop venue |
| 100 Individual Medley | SCY | 1:26.31 | BB+6.42s to A | 2026-03-14 | 2026 SCS Spring Age Group Champs @ RMDA - cop venue |
| 50 Freestyle | LCM | 39.00 | BB+3.31s to A | 2026-04-11 | 2026 CA YST LC A/BB/B 13 & up C Meet venue |
| 50 Backstroke | LCM | 53.99 | B+4.70s to BB | 2025-04-06 | 2025 CA YST LC A/BB/B 13 & up C Meet venue |
| 50 Breaststroke | LCM | 48.87 | BB+0.98s to A | 2026-06-14 | 2026 SCS June AG Invite venue |
| 100 Breaststroke | LCM | 1:49.48 | BB+3.89s to A | 2026-06-13 | 2026 SCS June AG Invite venue |
| 50 Butterfly | LCM | 46.38 | BB+5.79s to A | 2026-06-12 | 2026 SCS June AG Invite venue |
| 100 Butterfly | LCM | 1:42.89 | BB+6.60s to A | 2026-06-06 | 2026 CA YST A/BB/B LC Meet venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 10.
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 Freestyle | SCY | 35.02 | flat | 200 Free Relay | 2026-02-01 | 2026 CA Eastern Committee Winter SCY Champs |
| 50 Freestyle | SCY | 37.02 | flying | 200 Free Relay (leg 3) | 2025-11-02 | 2025 CA The Claremont Club B/C SC Meet |
| 50 Breaststroke | SCY | 44.15 | flying | 200 Medley Relay (leg 2) | 2025-12-14 | 2025 CA SCS/SCAT WAG |
| 50 Freestyle | LCM | 39.08 | flat | 200 Free Relay | 2026-05-23 | 2026 CA RST BB/B/C Long Course Meet |
| 50 Breaststroke | LCM | 50.18 | flying | 200 Medley Relay (leg 2) | 2026-06-12 | 2026 SCS June AG Invite |
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 10 & under · SCY
1460 points (3/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 3:05.66 | 365 |
| 100 BR SCY | 1:34.21 | 584 |
| 100 FL SCY | 1:27.29 | 511 |
| 100 BK SCY | — | 0 |
| 200 IM SCY | — | 0 |
IMR 10 & under · SCY
2432 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 100 FR SCY | 1:23.25 | 387 |
| 50 BK SCY | 42.20 | 443 |
| 50 BR SCY | 41.98 | 651 |
| 50 FL SCY | 40.99 | 423 |
| 100 IM SCY | 1:26.31 | 528 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 1:23.25
Front half 39.39s · back half 43.86s
200 Freestyle SCY 3:05.66
Front half 90.14s · back half 95.52s
100 Breaststroke SCY 1:34.21
Front half 45.07s · back half 49.14s
100 Butterfly SCY 1:27.29
Front half 39.65s · back half 47.64s
100 Individual Medley SCY 1:26.31
Front half 41.96s · back half 44.35s
100 Breaststroke LCM 1:49.48
Front half 51.09s · back half 58.39s
100 Butterfly LCM 1:42.89
Front half 48.14s · back half 54.75s
Progression
Faster times are higher. One card per event, all courses & history.