swimKai Matsumura
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 29.32 | BB+1.23s to A·+6.73s to Sectionals | 2026-02-28 | 2026 Winter ISI Regionals- HSC - copiedvenue |
| 100 Freestyle | SCY | 1:00.99 | A+2.20s to AA·+12.00s to Sectionals | 2026-07-19 | 2026 ISI Summer HPAC Regionalvenue |
| 200 Freestyle | SCY | 2:08.97 | A+0.78s to AA·+21.48s to Sectionals | 2026-07-19 | 2026 ISI Summer HPAC Regionalvenue |
| 500 Freestyle | SCY | 5:46.65 | A+1.66s to AA·+53.76s to Sectionals | 2026-07-18 | 2026 ISI Summer HPAC Regionalvenue |
| 50 Backstroke | SCY | 33.97 | BB+1.28s to A·+9.48s to Sectionals | 2026-02-28 | 2026 Winter ISI Regionals- HSC - copiedvenue |
| 100 Backstroke | SCY | 1:09.50 | BB+0.21s to A·+13.41s to Sectionals | 2026-07-19 | 2026 ISI Summer HPAC Regionalvenue |
| 100 Butterfly | SCY | 1:08.16 | A+2.27s to AA·+14.17s to Sectionals | 2026-07-18 | 2026 ISI Summer HPAC Regionalvenue |
| 100 Individual Medley | SCY | 1:10.46 | BB+0.47s to A | 2026-03-01 | 2026 Winter ISI Regionals- HSC - copiedvenue |
| 200 Individual Medley | SCY | 2:27.91 | A+2.32s to AA·+26.92s to Sectionals | 2026-07-18 | 2026 ISI Summer HPAC Regionalvenue |
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.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Freestyle | SCY | 29.93 | flat | 200 Free Relay | 2026-03-01 | 2026 Winter ISI Regionals- HSC - copied |
| 50 Freestyle | SCY | 28.25 | flying | 200 Free Relay (leg 2) | 2026-07-19 | 2026 ISI Summer HPAC Regional |
| 50 Butterfly | SCY | 30.91 | flying | 200 Medley Relay (leg 3) | 2026-07-18 | 2026 ISI Summer HPAC Regional |
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
2740 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:46.65 | 750 |
| 100 BK SCY | 1:09.50 | 627 |
| 100 FL SCY | 1:08.16 | 651 |
| 200 IM SCY | 2:27.91 | 712 |
| 100 BR SCY | — | 0 |
IMR 11-12 · SCY
1968 points (3/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:08.97 | 746 |
| 50 BK SCY | 33.97 | 571 |
| 100 IM SCY | 1:10.46 | 651 |
| 50 BR SCY | — | 0 |
| 50 FL 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 1:00.99
Front half 29.41s · back half 31.58s
200 Freestyle SCY 2:08.97
Front half 62.98s · back half 65.99s
500 Freestyle SCY 5:46.65
Front half 171.37s · back half 175.28s
100 Backstroke SCY 1:09.50
Front half 34.06s · back half 35.44s
100 Butterfly SCY 1:08.16
Front half 31.55s · back half 36.61s
100 Individual Medley SCY 1:10.46
Front half 33.56s · back half 36.90s
200 Individual Medley SCY 2:27.91
Front half 70.32s · back half 77.59s
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.