swimYilin Dai
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 33.26 | +8.37s to Sectionals | 2025-12-13 | 2025 Classic City Invitational Meetvenue |
| 100 Freestyle | SCY | 1:15.42 | +21.33s to Sectionals | 2025-12-14 | 2025 Classic City Invitational Meetvenue |
| 200 Freestyle | SCY | 3:11.16 | +74.47s to Sectionals | 2024-12-14 | 2024 Classic City Quad Meetvenue |
| 25 Backstroke | SCY | 20.15 | 2024-10-19 | 23rd Annual Chattahoochee Gold Invitationalvenue | |
| 50 Backstroke | SCY | 35.91 | +7.32s to Sectionals | 2026-03-08 | Speedo Southern Premierfast pool |
| 100 Backstroke | SCY | 1:19.72 | +18.93s to Sectionals | 2026-03-06 | Speedo Southern Premierfast pool |
| 50 Breaststroke | SCY | 43.18 | +9.59s to Sectionals | 2026-03-06 | Speedo Southern Premierfast pool |
| 100 Breaststroke | SCY | 1:34.70 | +23.81s to Sectionals | 2025-12-13 | 2025 Classic City Invitational Meetvenue |
| 50 Butterfly | SCY | 35.22 | +7.83s to Sectionals | 2026-03-08 | Speedo Southern Premierfast pool |
| 100 Butterfly | SCY | 1:24.46 | +25.37s to Sectionals | 2026-03-07 | Speedo Southern Premierfast pool |
| 100 Individual Medley | SCY | 1:21.08 | 2026-03-07 | Speedo Southern Premierfast pool | |
| 200 Individual Medley | SCY | 3:23.29 | +70.70s to Sectionals | 2025-01-01 | DYNA- Eastern Classic |
| 50 Freestyle | LCM | 37.83 | +9.44s to Sectionals | 2026-01-01 | Huntsville Swim Association |
| 100 Freestyle | LCM | 1:25.63 | +24.34s to Sectionals | 2026-06-28 | 2026 HSA June Invitationalvenue |
| 200 Freestyle | LCM | 3:25.78 | +73.69s to Sectionals | 2025-06-05 | 2025 DYNA Summer Invitational |
| 400 Freestyle | LCM | 6:30.92 | +112.13s to Sectionals | 2026-01-01 | Huntsville Swim Association |
| 100 Backstroke | LCM | 1:28.97 | +19.18s to Sectionals | 2026-01-01 | Huntsville Swim Association |
| 50 Breaststroke | LCM | 53.96 | +15.67s to Sectionals | 2025-06-05 | 2025 DYNA Summer Invitational |
| 100 Breaststroke | LCM | 1:59.11 | +38.52s to Sectionals | 2025-06-05 | 2025 DYNA Summer Invitational |
| 50 Butterfly | LCM | 39.58 | +8.29s to Sectionals | 2026-06-28 | 2026 HSA June Invitationalvenue |
| 100 Butterfly | LCM | 1:21.07 | +13.68s to Sectionals | 2026-01-01 | Huntsville Swim Association |
| 200 Individual Medley | LCM | 3:38.07 | +66.68s to Sectionals | 2025-06-27 | Gold Summer Invite 2025 |
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 | 31.17 | flying | 200 Free Relay (leg 4) | 2026-03-07 | Speedo Southern Premier |
| 50 Butterfly | SCY | 18.17 | flying | 200 Medley Relay (leg 3) | 2026-03-08 | Speedo Southern Premier |
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 10 & under · LCM
3161 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 3:25.78 | 428 |
| 100 BK LCM | 1:28.97 | 757 |
| 100 BR LCM | 1:59.11 | 475 |
| 100 FL LCM | 1:21.07 | 982 |
| 200 IM LCM | 3:38.07 | 519 |
IMR 10 & under · SCY
3291 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 100 FR SCY | 1:15.42 | 549 |
| 50 BK SCY | 35.91 | 747 |
| 50 BR SCY | 43.18 | 623 |
| 50 FL SCY | 35.22 | 701 |
| 100 IM SCY | 1:21.08 | 671 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 1:15.42
Front half 34.89s · back half 40.53s
200 Freestyle SCY 3:11.16
Front half 93.50s · back half 97.66s
100 Backstroke SCY 1:19.72 RT 0.77s
Front half 39.36s · back half 40.36s
100 Breaststroke SCY 1:34.70
Front half 45.53s · back half 49.17s
100 Butterfly SCY 1:24.46
Front half 40.60s · back half 43.86s
100 Individual Medley SCY 1:21.08
Front half 37.75s · back half 43.33s
200 Freestyle LCM 3:25.78 split/total mismatch
400 Freestyle LCM 6:30.92 split/total mismatch
100 Breaststroke LCM 1:59.11 split/total mismatch
Front half 58.48s · back half 60.63s
Reaction time
From electronically-timed starts only (~2% of corpus swims carry a reaction time). PRs with a recorded reaction show an RT chip in the splits section above.
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.