Sean Zheng
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 33.26 | +0.47s to B | 2025-09-27 | 2025 Elizabeth Kazeck Fall Sprint venue |
| 100 Freestyle | SCY | 1:16.99 | +5.50s to B | 2025-12-07 | RAFC Winter Classic venue |
| 50 Backstroke | SCY | 41.25 | +2.76s to B | 2025-10-25 | 2025 Halloween Spooktacular venue |
| 100 Backstroke | SCY | 1:33.73 | +11.54s to B | 2025-09-28 | 2025 Elizabeth Kazeck Fall Sprint venue |
| 50 Breaststroke | SCY | 45.84 | +2.35s to B | 2025-07-26 | BD End of Summer 2025 Invitational fast pool |
| 100 Breaststroke | SCY | 1:38.41 | +5.82s to B | 2025-09-27 | 2025 Elizabeth Kazeck Fall Sprint venue |
| 50 Butterfly | SCY | 42.42 | +5.33s to B | 2025-10-25 | 2025 Halloween Spooktacular venue |
| 100 Butterfly | SCY | 1:48.25 | +25.36s to B | 2024-10-27 | 2024 Halloween Spooktacular venue |
| 100 Individual Medley | SCY | 1:27.94 | +6.05s to B | 2026-03-01 | 2026 Spring Area 2 Championships venue |
| 200 Individual Medley | SCY | 3:11.98 | +12.69s to B | 2025-12-07 | RAFC Winter Classic venue |
| 50 Freestyle | LCM | 38.11 | +0.72s to B | 2026-04-12 | 2026 Ron Nardozzi Pre-Derby Sprint Invite - c venue |
| 100 Freestyle | LCM | 1:23.93 | +1.84s to B | 2026-05-17 | 2026 PA Long Course Invite venue |
| 200 Freestyle | LCM | 3:12.75 | +13.56s to B | 2026-04-12 | 2026 Ron Nardozzi Pre-Derby Sprint Invite - c venue |
| 50 Backstroke | LCM | 46.22 | +1.63s to B | 2026-05-17 | 2026 PA Long Course Invite venue |
| 100 Backstroke | LCM | 1:42.05 | +4.86s to B | 2025-05-17 | 2025 PA Long Course Invite venue |
| 50 Breaststroke | LCM | 51.30 | +1.51s to B | 2026-04-11 | 2026 Ron Nardozzi Pre-Derby Sprint Invite - c venue |
| 100 Breaststroke | LCM | 1:52.79 | +5.00s to B | 2026-05-17 | 2026 PA Long Course Invite venue |
| 50 Butterfly | LCM | 50.19 | +8.20s to B | 2026-05-17 | 2026 PA Long Course Invite venue |
| 100 Butterfly | LCM | 2:17.12 | +42.03s to B | 2024-05-18 | 2024 PA Long Course Invite venue |
| 200 Individual Medley | LCM | 3:37.21 | +12.22s to B | 2026-04-11 | 2026 Ron Nardozzi Pre-Derby Sprint Invite - c venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 12.
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 | 36.88 | flying | 200 Free Relay (leg 4) | 2024-09-28 | 2024 Elizabeth Kazeck Fall Sprint |
| 50 Freestyle | SCY | 51.13 | flying | 200 Medley Relay (leg 4) | 2025-02-16 | 2025 PA Sweetheart Special |
| 50 Breaststroke | SCY | 16.45 | flying | 200 Medley Relay (leg 2) | 2026-03-01 | 2026 Spring Area 2 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 11-12 · LCM
1124 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BK LCM | 1:42.05 | 328 |
| 100 BR LCM | 1:52.79 | 343 |
| 100 FL LCM | 2:17.12 | 120 |
| 200 IM LCM | 3:37.21 | 333 |
| 400 FR LCM | — | 0 |
IMR 11-12 · LCM
1588 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 3:12.75 | 338 |
| 50 BK LCM | 46.22 | 350 |
| 50 BR LCM | 51.30 | 348 |
| 50 FL LCM | 50.19 | 219 |
| 200 IM LCM | 3:37.21 | 333 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 1:16.99
Front half 36.78s · back half 40.21s
100 Backstroke SCY 1:33.73
Front half 45.02s · back half 48.71s
100 Breaststroke SCY 1:38.41
Front half 45.69s · back half 52.72s
100 Butterfly SCY 1:48.25
Front half 49.15s · back half 59.10s
100 Individual Medley SCY 1:27.94
Front half 42.46s · back half 45.48s
200 Individual Medley SCY 3:11.98
Front half 94.07s · back half 97.91s
100 Freestyle LCM 1:23.93
Front half 39.81s · back half 44.12s
200 Freestyle LCM 3:12.75
Front half 94.90s · back half 97.85s
100 Backstroke LCM 1:42.05
Front half 51.43s · back half 50.62s
100 Breaststroke LCM 1:52.79
Front half 52.55s · back half 60.24s
100 Butterfly LCM 2:17.12
Front half 63.07s · back half 74.05s
200 Individual Medley LCM 3:37.21
Front half 107.55s · back half 109.66s
Progression
Faster times are higher. One card per event, all courses & history.