swimYiyi Cheng
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 31.07 | B+0.58s to BB | 2024-09-22 | 2024 FCST Red v Blue Challenge venue |
| 100 Freestyle | SCY | 1:00.53 | A+1.74s to AA | 2026-01-01 | 2026 KATY venue |
| 200 Freestyle | SCY | 2:32.00 | B+7.11s to BB | 2024-11-10 | 2024 FCST Nov Tri-Meet venue |
| 50 Backstroke | SCY | 38.35 | B+2.76s to BB | 2024-09-21 | 2024 FCST Red v Blue Challenge venue |
| 100 Backstroke | SCY | 1:18.21 | B+2.52s to BB | 2025-12-05 | 2025 Gulf Age Group Championships fast pool |
| 200 Backstroke | SCY | 2:52.28 | B+11.79s to BB | 2024-11-10 | 2024 FCST Nov Tri-Meet venue |
| 50 Breaststroke | SCY | 35.67 | A+0.68s to AA | 2025-02-02 | 2025 Fleet Mardi Gras venue |
| 100 Breaststroke | SCY | 1:19.51 | BB+1.12s to A | 2024-12-08 | 2024 Gulf Age Group Championships venue |
| 200 Breaststroke | SCY | 2:49.51 | BB+1.12s to A | 2024-12-07 | 2024 Gulf Age Group Championships venue |
| 50 Butterfly | SCY | 36.96 | B+2.77s to BB | 2024-12-08 | 2024 Gulf Age Group Championships venue |
| 100 Butterfly | SCY | 1:30.12 | +7.23s to B | 2024-11-10 | 2024 FCST Nov Tri-Meet venue |
| 100 Individual Medley | SCY | 1:14.48 | BB+4.49s to A | 2025-02-22 | MAC Hosted 2025 Gulf 12 & Under Champs venue |
| 50 Freestyle | LCM | 33.74 | BB+1.65s to A | 2025-01-01 | FCST April LC Tri Meet |
| 200 Freestyle | LCM | 2:56.76 | B+10.37s to BB | 2024-05-18 | 2024 Katy/Pace May Open Invitational venue |
| 100 Backstroke | LCM | 1:33.91 | B+4.32s to BB | 2025-01-01 | FCST April LC Tri Meet |
| 50 Breaststroke | LCM | 38.45 | AA+0.36s to AAA | 2025-07-18 | 2025 Texas Age Group Championships fast pool |
| 100 Breaststroke | LCM | 1:27.70 | A+0.51s to AA | 2025-01-01 | Fleet Summer Classic - FULL |
| 200 Breaststroke | LCM | 3:15.82 | BB+0.43s to A | 2025-01-01 | Fleet Summer Classic - FULL |
| 50 Butterfly | LCM | 40.32 | B+1.63s to BB | 2025-01-01 | FCST April LC Tri Meet |
| 100 Butterfly | LCM | 1:35.64 | +0.55s to B | 2025-01-01 | FCST April LC Tri Meet |
| 200 Individual Medley | LCM | 3:05.50 | BB+11.31s to A | 2025-01-01 | FCST April LC Tri Meet |
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.
IMX / IMR
IMX 11-12 · LCM
2042 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BK LCM | 1:33.91 | 421 |
| 100 BR LCM | 1:27.70 | 730 |
| 100 FL LCM | 1:35.64 | 356 |
| 200 IM LCM | 3:05.50 | 535 |
| 400 FR LCM | — | 0 |
IMR 11-12 · SCY
2467 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:32.00 | 455 |
| 50 BK SCY | 38.35 | 397 |
| 50 BR SCY | 35.67 | 688 |
| 50 FL SCY | 36.96 | 376 |
| 100 IM SCY | 1:14.48 | 551 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
200 Freestyle SCY 2:32.00
Front half 72.81s · back half 79.19s
200 Backstroke SCY 2:52.28
Front half 85.26s · back half 87.02s
100 Breaststroke SCY 1:19.51
Front half 37.51s · back half 42.00s
200 Breaststroke SCY 2:49.51
Front half 81.50s · back half 88.01s
100 Butterfly SCY 1:30.12
Front half 40.77s · back half 49.35s
100 Individual Medley SCY 1:14.48
Front half 36.84s · back half 37.64s
200 Freestyle LCM 2:56.76
Front half 85.15s · back half 91.61s
Progression
Faster times are higher. One card per event, all courses & history.