Kosei Okano
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 24.37 | A+0.68s to AA·+1.78s to Sectionals | 2026-10-18 | 2026 OLY Fall Classicvenue |
| 100 Freestyle | SCY | 52.85 | A+0.86s to AA·+3.86s to Sectionals | 2026-03-08 | 2026 Lake Erie Regional Meetvenue |
| 200 Freestyle | SCY | 1:55.66 | A+2.07s to AA·+8.17s to Sectionals | 2026-10-18 | 2026 OLY Fall Classicvenue |
| 500 Freestyle | SCY | 5:46.50 | BB+23.91s to A·+53.61s to Sectionals | 2025-01-17 | 2025 USSC Odd Age Invitevenue |
| 50 Backstroke | SCY | 30.23 | BB+2.24s to A·+5.74s to Sectionals | 2025-12-21 | Life Time Michigan Candy Cane Classicvenue |
| 100 Backstroke | SCY | 1:07.01 | B+2.52s to BB·+10.92s to Sectionals | 2024-12-15 | SLA Holiday Blastvenue |
| 50 Breaststroke | SCY | 31.07 | A+0.28s to AA·+3.88s to Sectionals | 2026-03-08 | 2026 Lake Erie Regional Meetvenue |
| 100 Breaststroke | SCY | 1:09.50 | BB+2.11s to A·+5.91s to Sectionals | 2026-10-17 | 2026 OLY Fall Classicvenue |
| 200 Breaststroke | SCY | 2:45.80 | B+6.61s to BB·+27.21s to Sectionals | 2024-10-20 | 2024 OLY Fall Classicvenue |
| 50 Butterfly | SCY | 30.15 | B+0.06s to BB·+6.46s to Sectionals | 2025-01-18 | 2025 USSC Odd Age Invitevenue |
| 100 Butterfly | SCY | 59.54 | BB+0.65s to A·+5.55s to Sectionals | 2026-10-18 | 2026 OLY Fall Classicvenue |
| 100 Individual Medley | SCY | 1:06.56 | 2025-12-20 | Life Time Michigan Candy Cane Classicvenue | |
| 200 Individual Medley | SCY | 2:11.06 | A+4.37s to AA·+10.07s to Sectionals | 2026-03-20 | 2026 SCY MAGS Championship Meetvenue |
| 50 Freestyle | LCM | 27.20 | AA+1.01s to AAA·+1.21s to Sectionals | 2026-07-18 | 2026 MI LCM MAGS Championship Meetvenue |
| 100 Freestyle | LCM | 1:01.36 | A+1.67s to AA·+4.77s to Sectionals | 2026-07-17 | 2026 MI LCM MAGS Championship Meetvenue |
| 200 Freestyle | LCM | 2:18.95 | BB+1.76s to A·+15.46s to Sectionals | 2026-06-20 | DRD Freeze or Fry 2026venue |
| 50 Backstroke | LCM | 32.54 | A+0.75s to AA·+3.85s to Sectionals | 2026-05-30 | 2026 PCC Cruisin into Summervenue |
| 100 Backstroke | LCM | 1:16.25 | B+0.86s to BB·+11.86s to Sectionals | 2026-06-20 | DRD Freeze or Fry 2026venue |
| 50 Breaststroke | LCM | 35.72 | A+0.73s to AA·+3.73s to Sectionals | 2026-07-19 | 2026 MI LCM MAGS Championship Meetvenue |
| 100 Breaststroke | LCM | 1:20.01 | BB+1.62s to A·+7.22s to Sectionals | 2026-07-17 | 2026 MI LCM MAGS Championship Meetvenue |
| 200 Breaststroke | LCM | 3:11.71 | B+6.02s to BB·+31.92s to Sectionals | 2024-07-20 | 2024 MAGS Long Course Championship Meetvenue |
| 50 Butterfly | LCM | 30.63 | A+0.64s to AA·+3.24s to Sectionals | 2026-07-19 | 2026 MI LCM MAGS Championship Meetvenue |
| 200 Individual Medley | LCM | 2:33.50 | BB+0.31s to A·+14.11s to Sectionals | 2026-07-17 | 2026 MI LCM MAGS Championship Meetvenue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 15.
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 | 25.94 | flat | 200 Free Relay | 2025-02-22 | 2025 Lake Ontario Regional Meet |
| 50 Freestyle | SCY | 24.15 | flying | 200 Medley Relay (leg 4) | 2026-03-20 | 2026 SCY MAGS Championship Meet |
| 50 Freestyle | SCY | 24.02 | flying | 200 Free Relay (leg 2) | 2026-03-22 | 2026 SCY MAGS Championship Meet |
| 100 Freestyle | SCY | 53.09 | flying | 400 Free Relay (leg 2) | 2026-03-20 | 2026 SCY MAGS Championship Meet |
| 100 Freestyle | SCY | 52.81 | flying | 400 Medley Relay (leg 4) | 2026-03-21 | 2026 SCY MAGS Championship Meet |
| 50 Breaststroke | SCY | 34.61 | flying | 200 Medley Relay (leg 2) | 2025-02-23 | 2025 Lake Ontario Regional Meet |
| 100 Freestyle | LCM | 1:01.49 | flying | 400 Free Relay (leg 3) | 2026-07-17 | 2026 MI LCM MAGS Championship Meet |
| 50 Breaststroke | LCM | 34.87 | flying | 200 Medley Relay (leg 2) | 2026-07-18 | 2026 MI LCM MAGS Championship Meet |
| 100 Breaststroke | LCM | 18.84 | flying | 400 Medley Relay (leg 2) | 2026-07-18 | 2026 MI LCM MAGS Championship Meet |
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 15-16 · SCY
1581 points (3/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:46.50 | 506 |
| 200 BR SCY | 2:45.80 | 431 |
| 200 IM SCY | 2:11.06 | 644 |
| 200 BK SCY | — | 0 |
| 200 FL SCY | — | 0 |
| 400 IM SCY | — | 0 |
IMR 15-16 · SCY
2938 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:55.66 | 685 |
| 100 BK SCY | 1:07.01 | 432 |
| 100 BR SCY | 1:09.50 | 571 |
| 100 FL SCY | 59.54 | 606 |
| 200 IM SCY | 2:11.06 | 644 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 52.85
Front half 25.15s · back half 27.70s
200 Freestyle SCY 1:55.66
Front half 56.31s · back half 59.35s
500 Freestyle SCY 5:46.50
Front half 167.04s · back half 179.46s
100 Backstroke SCY 1:07.01
Front half 32.27s · back half 34.74s
100 Breaststroke SCY 1:09.50
Front half 32.78s · back half 36.72s
200 Breaststroke SCY 2:45.80
Front half 78.27s · back half 87.53s
100 Butterfly SCY 59.54
Front half 27.76s · back half 31.78s
100 Individual Medley SCY 1:06.56
Front half 30.92s · back half 35.64s
200 Individual Medley SCY 2:11.06
Front half 60.72s · back half 70.34s
100 Freestyle LCM 1:01.36
Front half 29.29s · back half 32.07s
200 Freestyle LCM 2:18.95
Front half 66.82s · back half 72.13s
100 Breaststroke LCM 1:20.01
Front half 37.39s · back half 42.62s
200 Breaststroke LCM 3:11.71
Front half 91.97s · back half 99.74s
200 Individual Medley LCM 2:33.50
Front half 70.12s · back half 83.38s
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.