swimMason Umemoto
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 29.21 | BB+1.12s to A | 2026-03-01 | 2026 HI Hawaiian Swimming SCY AGChamps fast pool |
| 100 Freestyle | SCY | 1:03.24 | BB+1.95s to A | 2026-02-26 | 2026 HI Hawaiian Swimming SCY AGChamps fast pool |
| 200 Freestyle | SCY | 2:23.69 | BB+10.00s to A | 2026-04-19 | 44th Annual Harry Mamizuka Invitational venue |
| 100 Backstroke | SCY | 1:33.83 | +11.64s to B | 2025-10-18 | BIG ISLAND SWIMMING @ HPA venue |
| 50 Breaststroke | SCY | 40.68 | B+0.59s to BB | 2026-02-07 | BIG ISLAND SWIMMING @ KCAC fast pool |
| 100 Breaststroke | SCY | 1:29.99 | B+4.50s to BB | 2026-03-07 | 2026 HI Junior Age Group SCY Championship fast pool |
| 50 Butterfly | SCY | 34.13 | BB+2.94s to A | 2026-04-18 | 44th Annual Harry Mamizuka Invitational venue |
| 100 Butterfly | SCY | 1:16.47 | B+0.38s to BB | 2026-04-19 | 44th Annual Harry Mamizuka Invitational venue |
| 100 Individual Medley | SCY | 1:16.52 | B+0.63s to BB | 2026-03-08 | 2026 HI Junior Age Group SCY Championship fast pool |
| 200 Individual Medley | SCY | 2:46.15 | B+0.36s to BB | 2026-02-28 | 2026 HI Hawaiian Swimming SCY AGChamps fast pool |
| 50 Freestyle | LCM | 33.54 | BB+1.45s to A | 2026-06-27 | BIG ISLAND SWIMMING @ KSH venue |
| 100 Freestyle | LCM | 1:13.66 | BB+3.27s to A | 2026-06-27 | BIG ISLAND SWIMMING @ KSH venue |
| 200 Freestyle | LCM | 2:39.71 | BB+6.12s to A | 2026-06-06 | BIG ISLAND SWIMMING @ KSH venue |
| 400 Freestyle | LCM | 5:40.96 | BB+14.27s to A | 2026-05-16 | BIG ISLAND SWIMMING @ KCAC fast pool |
| 50 Breaststroke | LCM | 50.20 | +0.41s to B | 2026-06-06 | BIG ISLAND SWIMMING @ KSH venue |
| 50 Butterfly | LCM | 39.00 | B+0.31s to BB | 2026-06-06 | BIG ISLAND SWIMMING @ KSH venue |
| 100 Butterfly | LCM | 1:33.93 | B+6.64s to BB | 2026-06-27 | BIG ISLAND SWIMMING @ KSH venue |
| 200 Individual Medley | LCM | 3:09.30 | BB+15.11s to A | 2026-06-06 | BIG ISLAND SWIMMING @ KSH 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 | 32.13 | flat | 200 Free Relay | 2025-11-08 | BIG ISLAND SWIMMING @ KCAC |
| 50 Breaststroke | SCY | 54.36 | flying | 200 Medley Relay (leg 2) | 2023-12-10 | 2023-HI BIG ISLAND SWIMMING |
| 50 Butterfly | SCY | 42.52 | flying | 200 Medley Relay (leg 3) | 2025-10-18 | BIG ISLAND SWIMMING @ HPA |
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 · SCY
1644 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BK SCY | 1:33.83 | 254 |
| 100 BR SCY | 1:29.99 | 427 |
| 100 FL SCY | 1:16.47 | 461 |
| 200 IM SCY | 2:46.15 | 502 |
| 500 FR SCY | — | 0 |
IMR 11-12 · SCY
1988 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:23.69 | 539 |
| 50 BR SCY | 40.68 | 463 |
| 50 FL SCY | 34.13 | 478 |
| 100 IM SCY | 1:16.52 | 508 |
| 50 BK 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 1:03.24
Front half 30.43s · back half 32.81s
200 Freestyle SCY 2:23.69
Front half 71.49s · back half 72.20s
100 Backstroke SCY 1:33.83
Front half 45.36s · back half 48.47s
100 Breaststroke SCY 1:29.99
Front half 42.27s · back half 47.72s
100 Butterfly SCY 1:16.47
Front half 36.88s · back half 39.59s
100 Individual Medley SCY 1:16.52
Front half 37.22s · back half 39.30s
200 Individual Medley SCY 2:46.15
Front half 82.88s · back half 83.27s
200 Freestyle LCM 2:39.71
Front half 79.96s · back half 79.75s
400 Freestyle LCM 5:40.96
Front half 166.48s · back half 174.48s
200 Individual Medley LCM 3:09.30
Front half 94.64s · back half 94.66s
Progression
Faster times are higher. One card per event, all courses & history.