swimMatthias Cheng
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 28.91 | BB+0.82s to A | 2026-04-19 | 44th Annual Harry Mamizuka Invitational venue |
| 100 Freestyle | SCY | 1:28.99 | +17.50s to B | 2023-09-16 | 2023-HI- Oahu A+ Meet venue |
| 200 Freestyle | SCY | 2:27.87 | B+2.98s to BB | 2026-04-19 | 44th Annual Harry Mamizuka Invitational venue |
| 50 Backstroke | SCY | 42.36 | +3.87s to B | 2024-10-23 | 1563847 |
| 100 Backstroke | SCY | 1:37.15 | +14.96s to B | 2024-10-26 | 24th Annual Bill Smith Invitational |
| 50 Breaststroke | SCY | 40.34 | B+0.25s to BB | 2026-04-18 | 44th Annual Harry Mamizuka Invitational venue |
| 100 Breaststroke | SCY | 1:50.02 | +17.43s to B | 2023-09-30 | 2023 HI Al Minn Invitational slow pool |
| 50 Butterfly | SCY | 32.82 | BB+1.63s to A | 2026-04-18 | 44th Annual Harry Mamizuka Invitational venue |
| 100 Individual Medley | SCY | 1:21.39 | B+5.50s to BB | 2025-03-03 | 1583389 |
| 200 Individual Medley | SCY | 3:29.55 | +30.26s to B | 2024-02-04 | 2024-HI- Oahu A+ Meet |
| 50 Freestyle | LCM | 33.37 | BB+1.28s to A | 2026-05-23 | OSL A+ LCM Meet venue |
| 100 Freestyle | LCM | 1:27.99 | +5.90s to B | 2024-07-19 | 2024 HI Age Group LCM Championship |
| 200 Freestyle | LCM | 2:40.76 | BB+7.17s to A | 2026-06-07 | 2026 15th Annual Wada Rainbow Invitational - venue |
| 400 Freestyle | LCM | 5:58.49 | B+4.50s to BB | 2026-05-23 | OSL A+ LCM Meet venue |
| 50 Backstroke | LCM | 43.78 | B+2.59s to BB | 2026-06-07 | 2026 15th Annual Wada Rainbow Invitational - venue |
| 100 Backstroke | LCM | 1:53.59 | +16.40s to B | 2024-06-01 | 2024 13th Annual Rainbow Aquatics Invite |
| 50 Breaststroke | LCM | 45.75 | BB+3.76s to A | 2026-06-06 | 2026 15th Annual Wada Rainbow Invitational - venue |
| 100 Breaststroke | LCM | 1:52.87 | +5.08s to B | 2024-07-19 | 2024 HI Age Group LCM Championship |
| 50 Butterfly | LCM | 37.08 | BB+1.79s to A | 2026-06-06 | 2026 15th Annual Wada Rainbow Invitational - venue |
| 200 Individual Medley | LCM | 3:08.75 | BB+14.56s to A | 2026-07-03 | 2026 Keo Nakama Swim Meet 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 | 37.26 | flying | 200 Medley Relay (leg 4) | 2023-09-30 | 2023 HI Al Minn Invitational |
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
1593 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 400 FR LCM | 5:58.49 | 507 |
| 100 BK LCM | 1:53.59 | 237 |
| 100 BR LCM | 1:52.87 | 342 |
| 200 IM LCM | 3:08.75 | 507 |
| 100 FL LCM | — | 0 |
IMR 11-12 · LCM
2538 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:40.76 | 584 |
| 50 BK LCM | 43.78 | 412 |
| 50 BR LCM | 45.75 | 490 |
| 50 FL LCM | 37.08 | 545 |
| 200 IM LCM | 3:08.75 | 507 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
200 Freestyle SCY 2:27.87
Front half 71.56s · back half 76.31s
100 Backstroke SCY 1:37.15 split/total mismatch
Front half 42.93s · back half 54.22s
100 Individual Medley SCY 1:21.39 split/total mismatch
Front half 38.84s · back half 42.55s
200 Freestyle LCM 2:40.76
Front half 78.80s · back half 81.96s
400 Freestyle LCM 5:58.49
Front half 175.61s · back half 182.88s
200 Individual Medley LCM 3:08.75
Front half 95.26s · back half 93.49s
Progression
Faster times are higher. One card per event, all courses & history.