swimOtis Tsai
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 21.36 | AAA+0.27s to AAAA·Sectionals ✓+0.07s to Futures | 2024-05-02 | 2024 CIF-SS Division 1venue |
| 100 Freestyle | SCY | 46.61 | AAA+0.52s to AAAA·Sectionals ✓+0.22s to Futures | 2025-02-27 | 2025 RBAC March Madness Spring Championshipvenue |
| 200 Freestyle | SCY | 1:46.48 | AA+0.09s to AAA·Sectionals ✓+4.89s to Futures | 2024-10-19 | 2024 CA Lakewood Halloween Inviteslow pool |
| 500 Freestyle | SCY | 5:07.25 | A+5.56s to AA·+4.56s to Sectionals | 2024-09-29 | 2024 CA LKWD September Closed Inviteslow pool |
| 100 Backstroke | SCY | 48.97 | AAAA·Winter JNs ✓+0.38s to Jr Nationals | 2025-07-15 | Rose Post LAI Intrasquadvenue |
| 200 Backstroke | SCY | 1:49.89 | AAA+0.30s to AAAA·Futures ✓+2.10s to Winter JNs | 2025-05-13 | 2025 Rose Post CIF Closed Invitationalvenue |
| 100 Butterfly | SCY | 50.67 | AAA+1.08s to AAAA·Sectionals ✓+0.08s to Futures | 2025-02-28 | 2025 RBAC March Madness Spring Championshipvenue |
| 200 Butterfly | SCY | 1:55.04 | AAA+3.45s to AAAA·Sectionals ✓+1.35s to Futures | 2025-02-22 | 2025 Pacific Committee SC Championshipvenue |
| 200 Individual Medley | SCY | 2:01.95 | AA+4.46s to AAA·Sectionals ✓+8.06s to Futures | 2024-09-29 | 2024 CA LKWD September Closed Inviteslow pool |
| 50 Freestyle | LCM | 24.38 | AAAA·Futures ✓+0.29s to Winter JNs | 2025-05-23 | 2025 CA 29th NOVA-Speedo Grand Challengevenue |
| 100 Freestyle | LCM | 54.00 | AAA+1.01s to AAAA·Sectionals ✓+0.41s to Futures | 2025-04-11 | 2025 CA MVN Fran Crippen SMOCvenue |
| 200 Freestyle | LCM | 2:02.71 | AA+0.52s to AAA·Sectionals ✓+4.92s to Futures | 2025-05-23 | 2025 CA 29th NOVA-Speedo Grand Challengevenue |
| 50 Backstroke | LCM | 27.87 | AAAA·Futures ✓+1.18s to Jr Nationals | 2025-07-23 | USA Swimming Futures Sacramento 2025 |
| 100 Backstroke | LCM | 59.12 | AAA+0.03s to AAAA·Futures ✓+0.33s to Winter JNs | 2025-07-23 | USA Swimming Futures Sacramento 2025 |
| 200 Backstroke | LCM | 2:11.67 | AAA+2.98s to AAAA·Futures ✓+3.38s to Winter JNs | 2025-07-26 | USA Swimming Futures Sacramento 2025venue |
| 50 Butterfly | LCM | 26.71 | AAA+0.32s to AAAA·+0.42s to Futures | 2025-04-12 | 2025 CA MVN Fran Crippen SMOCvenue |
| 100 Butterfly | LCM | 57.77 | AAA+0.78s to AAAA·Futures ✓+1.28s to Winter JNs | 2024-07-27 | 2024 CA SCS/ BREA Summer A/G Champsslow pool |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 17.
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 Freestyle | SCY | 22.01 | flat | 200 Free Relay | 2024-11-09 | 2024 Legends of Coaching Series-Kevin Perry |
| 50 Freestyle | SCY | 21.09 | flying | 200 Free Relay (leg 3) | 2025-03-01 | 2025 RBAC March Madness Spring Championship |
| 100 Freestyle | SCY | 46.05 | flying | 400 Free Relay (leg 3) | 2025-03-02 | 2025 RBAC March Madness Spring Championship |
| 200 Freestyle | SCY | 1:44.94 | flying | 800 Free Relay (leg 2) | 2025-02-27 | 2025 RBAC March Madness Spring Championship |
| 50 Backstroke | SCY | 23.57 | flat | 200 Medley Relay | 2025-03-01 | 2025 RBAC March Madness Spring Championship |
| 100 Backstroke | SCY | 50.89 | flat | 400 Medley Relay | 2025-02-28 | 2025 RBAC March Madness Spring Championship |
| 50 Freestyle | LCM | 23.59 | flying | 200 Medley Relay (leg 4) | 2025-07-23 | USA Swimming Futures Sacramento 2025 |
| 50 Freestyle | LCM | 23.33 | flying | 200 Free Relay (leg 4) | 2024-07-26 | 2024 CA SCS/ BREA Summer A/G Champs |
| 100 Freestyle | LCM | 53.00 | flying | 400 Medley Relay (leg 4) | 2025-07-26 | USA Swimming Futures Sacramento 2025 |
| 100 Freestyle | LCM | 52.54 | flying | 400 Free Relay (leg 4) | 2025-07-25 | USA Swimming Futures Sacramento 2025 |
| 200 Freestyle | LCM | 2:01.29 | flying | 800 Free Relay (leg 4) | 2024-07-25 | 2024 CA SCS/ BREA Summer A/G Champs |
| 50 Backstroke | LCM | 27.79 | flat | 200 Medley Relay | 2025-06-15 | 2025 CA SCS RAA June Age Group Championships |
| 100 Backstroke | LCM | 1:01.96 | flat | 400 Medley Relay | 2024-07-27 | 2024 CA SCS/ BREA Summer A/G Champs |
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
3256 points (4/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:07.25 | 696 |
| 200 BK SCY | 1:49.89 | 946 |
| 200 FL SCY | 1:55.04 | 869 |
| 200 IM SCY | 2:01.95 | 745 |
| 200 BR SCY | — | 0 |
| 400 IM SCY | — | 0 |
IMR 17-18 · SCY
3482 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:46.48 | 833 |
| 100 BK SCY | 48.97 | 995 |
| 100 FL SCY | 50.67 | 909 |
| 200 IM SCY | 2:01.95 | 745 |
| 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 46.61
Front half 22.58s · back half 24.03s
200 Freestyle SCY 1:46.48
Front half 51.62s · back half 54.86s
500 Freestyle SCY 5:07.25
Front half 151.76s · back half 155.49s
100 Backstroke SCY 48.97
Front half 23.60s · back half 25.37s
100 Butterfly SCY 50.67
Front half 23.52s · back half 27.15s
200 Butterfly SCY 1:55.04
Front half 56.04s · back half 59.00s
200 Individual Medley SCY 2:01.95
Front half 57.20s · back half 64.75s
100 Freestyle LCM 54.00
Front half 26.35s · back half 27.65s
200 Freestyle LCM 2:02.71
Front half 57.58s · back half 65.13s
100 Backstroke LCM 59.12 split/total mismatch
Front half 28.50s · back half 30.62s
200 Backstroke LCM 2:11.67
Front half 64.62s · back half 67.05s
100 Butterfly LCM 57.77 RT 0.68s
Front half 27.05s · back half 30.72s
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.
Swim history
Every recorded swim, newest first
| Date | Event | Course | Time | Age | Round | Meet |
|---|
Individual swims with a recorded date and time — including disqualifications — plus reconstructed relay legs (marked). Assembled in the browser from this page’s data.
Progression
Faster times are higher. One card per event, all courses & history.