swimNathaniel Tsai
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 31.90 | B+1.41s to BB | 2025-09-27 | 2025 PVST Pentathlon venue |
| 100 Freestyle | SCY | 1:10.64 | B+4.25s to BB | 2025-12-07 | 2025 Winter Coastal Champs venue |
| 50 Backstroke | SCY | 38.03 | B+2.44s to BB | 2026-02-22 | BUEN February Coastal Champs venue |
| 100 Backstroke | SCY | 1:22.00 | B+6.31s to BB | 2025-11-22 | 2025 CANY Cranberry venue |
| 50 Breaststroke | SCY | 38.40 | BB+1.71s to A | 2026-02-08 | 2026 PVST Coastal vs. Cancer venue |
| 100 Breaststroke | SCY | 1:26.66 | B+1.17s to BB | 2026-02-22 | BUEN February Coastal Champs venue |
| 200 Breaststroke | SCY | 3:01.90 | BB+13.51s to A | 2026-02-08 | 2026 PVST Coastal vs. Cancer venue |
| 50 Butterfly | SCY | 32.97 | BB+1.78s to A | 2025-11-23 | 2025 CANY Cranberry venue |
| 100 Butterfly | SCY | 1:19.42 | B+3.33s to BB | 2026-02-08 | 2026 PVST Coastal vs. Cancer venue |
| 100 Individual Medley | SCY | 1:19.79 | B+3.90s to BB | 2025-10-19 | 2025 CA SBSC October IMX Meet venue |
| 200 Individual Medley | SCY | 2:48.89 | B+3.10s to BB | 2025-03-16 | 2025 SCS Spring Age Group Champs @ Armada venue |
| 50 Freestyle | LCM | 35.42 | B+0.63s to BB | 2026-05-23 | BUEN Memorial Day LC Meet venue |
| 50 Backstroke | LCM | 42.94 | B+1.75s to BB | 2026-05-24 | BUEN Memorial Day LC Meet venue |
| 100 Backstroke | LCM | 1:30.96 | B+1.37s to BB | 2026-06-28 | 2026 Class-Malibu Waves Free Weekend Invite venue |
| 50 Breaststroke | LCM | 41.88 | A+1.89s to AA | 2026-06-28 | 2026 Class-Malibu Waves Free Weekend Invite venue |
| 100 Breaststroke | LCM | 1:37.55 | BB+6.26s to A | 2026-04-11 | 2026 BUEN LCM Opener venue |
| 50 Butterfly | LCM | 36.01 | BB+0.72s to A | 2026-06-28 | 2026 Class-Malibu Waves Free Weekend Invite venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 12.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Freestyle | SCY | 36.72 | flying | 200 Free Relay (leg 4) | 2025-12-21 | 2025 SI Winter Age Group Championships |
| 50 Butterfly | SCY | 37.68 | flying | 200 Medley Relay (leg 3) | 2025-02-23 | 2025 CA BUENA Coastal Championship |
| 50 Freestyle | LCM | 34.70 | flat | 200 Free Relay | 2026-06-13 | 2026 SCS June AG Invite-CANY |
| 50 Freestyle | LCM | 38.27 | flying | 200 Free Relay (leg 2) | 2025-05-25 | BUEN Memorial Day LC Meet |
| 50 Backstroke | LCM | 51.20 | flat | 200 Medley Relay | 2024-07-26 | 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 11-12 · SCY
1748 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BK SCY | 1:22.00 | 381 |
| 100 BR SCY | 1:26.66 | 478 |
| 100 FL SCY | 1:19.42 | 411 |
| 200 IM SCY | 2:48.89 | 478 |
| 500 FR SCY | — | 0 |
IMR 11-12 · SCY
1936 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 50 BK SCY | 38.03 | 407 |
| 50 BR SCY | 38.40 | 551 |
| 50 FL SCY | 32.97 | 530 |
| 100 IM SCY | 1:19.79 | 448 |
| 200 FR 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 1:10.64
Front half 33.98s · back half 36.66s
100 Backstroke SCY 1:22.00
Front half 39.88s · back half 42.12s
100 Breaststroke SCY 1:26.66
Front half 42.38s · back half 44.28s
200 Breaststroke SCY 3:01.90
Front half 88.32s · back half 93.58s
100 Butterfly SCY 1:19.42
Front half 36.80s · back half 42.62s
100 Individual Medley SCY 1:19.79
Front half 37.63s · back half 42.16s
200 Individual Medley SCY 2:48.89
Front half 81.77s · back half 87.12s
100 Backstroke LCM 1:30.96
Front half 45.53s · back half 45.43s
100 Breaststroke LCM 1:37.55
Front half 46.93s · back half 50.62s
Progression
Faster times are higher. One card per event, all courses & history.