swimAcacia Zhai
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 31.22 | BB+1.83s to A | 2025-02-01 | Hydro Winter Open venue |
| 100 Freestyle | SCY | 1:06.95 | BB+2.86s to A | 2025-02-15 | 2025 PA Sweetheart Special venue |
| 50 Backstroke | SCY | 36.45 | B+0.36s to BB | 2025-02-16 | 2025 PA Sweetheart Special venue |
| 100 Backstroke | SCY | 1:17.80 | BB+4.81s to A | 2025-02-15 | 2025 PA Sweetheart Special venue |
| 50 Breaststroke | SCY | 42.02 | B+1.13s to BB | 2025-02-15 | 2025 PA Sweetheart Special venue |
| 100 Breaststroke | SCY | 1:29.60 | B+0.21s to BB | 2025-02-16 | 2025 PA Sweetheart Special venue |
| 50 Butterfly | SCY | 33.76 | BB+2.07s to A | 2025-02-15 | 2025 PA Sweetheart Special venue |
| 100 Butterfly | SCY | 1:17.18 | BB+4.89s to A | 2025-02-16 | 2025 PA Sweetheart Special venue |
| 100 Individual Medley | SCY | 1:19.17 | BB+6.08s to A | 2024-11-16 | 2024 Patriot Aquatics Winter Invite venue |
| 200 Individual Medley | SCY | 3:10.92 | +6.93s to B | 2024-06-29 | 2024 Firecracker slow pool |
| 50 Freestyle | LCM | 33.70 | BB+0.31s to A | 2025-05-17 | 2025 PA Long Course Invite venue |
| 100 Freestyle | LCM | 1:16.44 | BB+2.95s to A | 2025-04-26 | 2025 Ron Nardozzi Pre-Derby Sprint Invite venue |
| 200 Freestyle | LCM | 2:49.98 | BB+9.89s to A | 2025-04-27 | 2025 Ron Nardozzi Pre-Derby Sprint Invite venue |
| 50 Backstroke | LCM | 44.68 | B+2.99s to BB | 2024-04-20 | 2024 Ron Nardozzi Pre-Derby Sprint Invite venue |
| 100 Backstroke | LCM | 1:27.75 | BB+2.96s to A | 2025-05-17 | 2025 PA Long Course Invite venue |
| 50 Breaststroke | LCM | 47.53 | B+1.34s to BB | 2025-05-17 | 2025 PA Long Course Invite venue |
| 100 Breaststroke | LCM | 1:43.23 | B+1.04s to BB | 2025-04-27 | 2025 Ron Nardozzi Pre-Derby Sprint Invite venue |
| 100 Butterfly | LCM | 1:27.83 | BB+5.14s to A | 2025-05-17 | 2025 PA Long Course Invite venue |
| 200 Individual Medley | LCM | 3:10.96 | BB+10.27s to A | 2025-04-26 | 2025 Ron Nardozzi Pre-Derby Sprint Invite 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 Backstroke | SCY | 35.47 | flat | 200 Medley Relay | 2025-02-16 | 2025 PA Sweetheart Special |
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
2159 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BK LCM | 1:27.75 | 573 |
| 100 BR LCM | 1:43.23 | 497 |
| 100 FL LCM | 1:27.83 | 523 |
| 200 IM LCM | 3:10.96 | 566 |
| 400 FR LCM | — | 0 |
IMR 11-12 · SCY
2067 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 50 BK SCY | 36.45 | 508 |
| 50 BR SCY | 42.02 | 483 |
| 50 FL SCY | 33.76 | 551 |
| 100 IM SCY | 1:19.17 | 525 |
| 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 1:06.95
Front half 32.74s · back half 34.21s
100 Backstroke SCY 1:17.80
Front half 38.10s · back half 39.70s
100 Breaststroke SCY 1:29.60
Front half 42.52s · back half 47.08s
100 Butterfly SCY 1:17.18
Front half 35.77s · back half 41.41s
100 Individual Medley SCY 1:19.17
Front half 38.19s · back half 40.98s
200 Individual Medley SCY 3:10.92
Front half 92.86s · back half 98.06s
200 Freestyle LCM 2:49.98
Front half 84.12s · back half 85.86s
100 Backstroke LCM 1:27.75
Front half 42.71s · back half 45.04s
100 Butterfly LCM 1:27.83
Front half 40.55s · back half 47.28s
200 Individual Medley LCM 3:10.96
Front half 91.46s · back half 99.50s
Progression
Faster times are higher. One card per event, all courses & history.