swimYuta Kosaka
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 22.74 | Sectionals ✓+3.05s to US Open | 2025-11-08 | SCAT Openvenue |
| 100 Freestyle | SCY | 49.16 | Sectionals ✓+6.07s to US Open | 2025-11-09 | SCAT Openvenue |
| 200 Freestyle | SCY | 1:49.19 | Sectionals ✓+14.20s to US Open | 2024-11-09 | SCAT Openvenue |
| 500 Freestyle | SCY | 4:43.77 | Sectionals ✓+23.88s to US Open | 2025-02-16 | 2025 THSC Last Chance Invitationalvenue |
| 200 Backstroke | SCY | 2:10.91 | +9.62s to Sectionals | 2024-11-09 | SCAT Openvenue |
| 50 Breaststroke | SCY | 26.96 | +2.57s to US Open | 2026-02-15 | 2026 OR CB Valentine Last Chance Invitationalfast pool |
| 100 Breaststroke | SCY | 55.65 | Sectionals ✓+2.36s to US Open | 2024-12-07 | 2024 Oregon Senior Openvenue |
| 200 Breaststroke | SCY | 2:01.19 | Sectionals ✓+4.80s to US Open | 2024-12-08 | 2024 Oregon Senior Openvenue |
| 100 Butterfly | SCY | 50.91 | Sectionals ✓+4.22s to US Open | 2025-02-16 | 2025 THSC Last Chance Invitationalvenue |
| 200 Butterfly | SCY | 1:53.91 | Sectionals ✓+9.12s to US Open | 2025-11-09 | SCAT Openvenue |
| 400 Individual Medley | SCY | 3:58.54 | Sectionals ✓+10.85s to US Open | 2024-12-07 | 2024 Oregon Senior Openvenue |
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 | 23.29 | flat | 200 Free Relay | 2024-11-09 | SCAT Open |
| 50 Freestyle | SCY | 22.38 | flying | 200 Free Relay (leg 2) | 2025-11-08 | SCAT Open |
| 50 Breaststroke | SCY | 25.52 | flying | 200 Medley Relay (leg 2) | 2024-12-07 | 2024 Oregon Senior Open |
| 100 Breaststroke | SCY | 57.04 | flying | 400 Medley Relay (leg 2) | 2025-11-07 | SCAT Open |
Reconstructed from relay split marks. Flat = lead-off (comparable to individual times); flying starts run ~0.5–0.7s fast and are not PRs.
PR splits
100 Freestyle SCY 49.16
Front half 23.74s · back half 25.42s
200 Freestyle SCY 1:49.19
Front half 52.74s · back half 56.45s
500 Freestyle SCY 4:43.77
Front half 138.37s · back half 145.40s
200 Backstroke SCY 2:10.91
Front half 63.35s · back half 67.56s
100 Breaststroke SCY 55.65
Front half 26.79s · back half 28.86s
200 Breaststroke SCY 2:01.19
Front half 59.10s · back half 62.09s
100 Butterfly SCY 50.91
Front half 23.78s · back half 27.13s
200 Butterfly SCY 1:53.91
Front half 54.57s · back half 59.34s
400 Individual Medley SCY 3:58.54
Front half 116.46s · back half 122.08s
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.