swimYiyi Cheng
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 29.10 | BB+1.01s to A·+6.81s to Sectionals | 2025-12-05 | 2025 Gulf Age Group Championships |
| 100 Freestyle | SCY | 1:00.53 | A+1.74s to AA·+12.24s to Sectionals | 2026-01-02 | 2026 KATY January Westpark Tollway Classicvenue |
| 200 Freestyle | SCY | 2:32.00 | B+7.11s to BB·+46.21s to Sectionals | 2024-11-10 | 2024 FCST Nov Tri-Meetvenue |
| 50 Backstroke | SCY | 35.90 | B+0.31s to BB·+10.21s to Sectionals | 2025-12-05 | 2025 Gulf Age Group Championships |
| 100 Backstroke | SCY | 1:18.21 | B+2.52s to BB·+23.12s to Sectionals | 2025-12-05 | 2025 Gulf Age Group Championships |
| 200 Backstroke | SCY | 2:52.28 | B+11.79s to BB·+49.99s to Sectionals | 2024-11-10 | 2024 FCST Nov Tri-Meetvenue |
| 50 Breaststroke | SCY | 33.38 | AA+0.09s to AAA·+3.89s to Sectionals | 2025-12-05 | 2025 Gulf Age Group Championships |
| 100 Breaststroke | SCY | 1:12.46 | AA+1.07s to AAA·+9.77s to Sectionals | 2026-02-20 | 2026 Gulf 12 & Under Championships |
| 200 Breaststroke | SCY | 2:37.95 | AA+3.56s to AAA·+18.66s to Sectionals | 2026-02-20 | 2026 Gulf 12 & Under Championships |
| 50 Butterfly | SCY | 36.96 | B+2.77s to BB·+12.67s to Sectionals | 2024-12-08 | 2024 Gulf Age Group Championshipsvenue |
| 100 Butterfly | SCY | 1:30.12 | +7.23s to B·+37.43s to Sectionals | 2024-11-10 | 2024 FCST Nov Tri-Meetvenue |
| 100 Individual Medley | SCY | 1:11.00 | BB+1.01s to A | 2025-12-05 | 2025 Gulf Age Group Championships |
| 50 Freestyle | LCM | 33.25 | BB+1.16s to A·+7.66s to Sectionals | 2026-01-02 | 2026 KATY January Westpark Tollway Classicvenue |
| 100 Freestyle | LCM | 1:15.39 | BB+5.00s to A·+20.10s to Sectionals | 2025-05-16 | 2025 Fleet Summer Classic |
| 200 Freestyle | LCM | 2:31.79 | A+4.60s to AA·+30.90s to Sectionals | 2025-04-11 | 2025 FCST April LC Invite |
| 100 Backstroke | LCM | 1:33.91 | B+4.32s to BB·+29.42s to Sectionals | 2025-04-11 | 2025 FCST April LC Invite |
| 50 Breaststroke | LCM | 38.45 | AA+0.36s to AAA·+4.26s to Sectionals | 2025-07-18 | 2025 Texas Age Group Championshipsfast pool |
| 100 Breaststroke | LCM | 1:25.39 | AA+2.30s to AAA·+13.00s to Sectionals | 2026-01-02 | 2026 KATY January Westpark Tollway Classicvenue |
| 200 Breaststroke | LCM | 3:15.82 | BB+0.43s to A·+35.43s to Sectionals | 2025-05-16 | 2025 Fleet Summer Classic |
| 50 Butterfly | LCM | 40.32 | B+1.63s to BB·+12.53s to Sectionals | 2025-04-11 | 2025 FCST April LC Invite |
| 100 Butterfly | LCM | 1:35.64 | +0.55s to B·+35.15s to Sectionals | 2025-04-11 | 2025 FCST April LC Invite |
| 200 Butterfly | LCM | 2:58.58 | BB+2.49s to A·+41.19s to Sectionals | 2025-05-16 | 2025 Fleet Summer Classic |
| 200 Individual Medley | LCM | 3:05.50 | BB+11.31s to A·+47.81s to Sectionals | 2025-04-11 | 2025 FCST April LC Invite |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 12.
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 | 30.56 | flying | 200 Free Relay (leg 4) | 2025-02-22 | MAC Hosted 2025 Gulf 12 & Under Champs |
| 50 Breaststroke | SCY | 35.46 | flying | 200 Medley Relay (leg 2) | 2025-02-23 | MAC Hosted 2025 Gulf 12 & Under Champs |
| 100 Breaststroke | SCY | 1:19.33 | flying | 400 Medley Relay (leg 2) | 2024-12-07 | 2024 Gulf Age Group 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
2103 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BK LCM | 1:33.91 | 421 |
| 100 BR LCM | 1:25.39 | 791 |
| 100 FL LCM | 1:35.64 | 356 |
| 200 IM LCM | 3:05.50 | 535 |
| 400 FR LCM | — | 0 |
IMR 11-12 · SCY
2790 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:32.00 | 455 |
| 50 BK SCY | 35.90 | 484 |
| 50 BR SCY | 33.38 | 839 |
| 50 FL SCY | 36.96 | 376 |
| 100 IM SCY | 1:11.00 | 636 |
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 Butterfly SCY 1:30.12
Front half 40.77s · back half 49.35s
50 Freestyle LCM 33.25 split/total mismatch
Front half 33.58s · back half -0.33s
100 Breaststroke LCM 1:25.39
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.