swimMatthew Kosov
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 25 Freestyle | SCY | 16.39 | 2025-09-20 | 2025 SI PS Freestyle Festival Sat | |
| 50 Freestyle | SCY | 32.85 | 2026-03-06 | 2026 SI 14U AGE GRP CHAMPIONSHIPS | |
| 100 Freestyle | SCY | 1:15.08 | 2026-03-06 | 2026 SI 14U AGE GRP CHAMPIONSHIPS | |
| 200 Freestyle | SCY | 2:49.02 | 2026-03-06 | 2026 SI 14U AGE GRP CHAMPIONSHIPS | |
| 25 Backstroke | SCY | 25.33 | 2024-05-11 | 2024 SI BAY 10U Mini Meet slow pool | |
| 50 Backstroke | SCY | 40.29 | 2026-02-22 | 2026 SI JBST Age Group Champs Max venue | |
| 100 Backstroke | SCY | 1:31.67 | 2026-02-21 | 2026 SI JBST Age Group Champs Max venue | |
| 25 Butterfly | SCY | 24.25 | 2025-01-25 | 2024 SI BAY 10U Mini Meet slow pool | |
| 50 Butterfly | SCY | 36.45 | 2026-03-06 | 2026 SI 14U AGE GRP CHAMPIONSHIPS | |
| 100 Butterfly | SCY | 1:30.55 | 2026-03-06 | 2026 SI 14U AGE GRP CHAMPIONSHIPS | |
| 100 Individual Medley | SCY | 1:29.85 | 2026-02-21 | 2026 SI JBST Age Group Champs Max venue | |
| 200 Individual Medley | SCY | 3:10.01 | 2026-01-10 | 2026 SI BAY 14U Rising Stars 3 | |
| 50 Freestyle | LCM | 36.76 | 2026-04-25 | 2026 SI PS ABB Meet - B Group venue | |
| 100 Freestyle | LCM | 1:24.03 | 2026-06-19 | 2026 SI Splash and Dash fast pool | |
| 200 Freestyle | LCM | 3:06.74 | 2026-06-21 | 2026 SI Splash and Dash fast pool | |
| 50 Backstroke | LCM | 47.35 | 2026-04-25 | 2026 SI PS ABB Meet - B Group venue | |
| 50 Butterfly | LCM | 42.90 | 2026-06-21 | 2026 SI Splash and Dash fast pool |
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 Butterfly | SCY | 39.23 | flying | 200 Medley Relay (leg 3) | 2025-12-19 | 2025 SI Winter Age Group Championships |
| 50 Freestyle | LCM | 40.51 | flat | 200 Free Relay | 2025-07-25 | 2025 SI LC AG CHAMPS |
| 50 Freestyle | LCM | 35.91 | flying | 200 Medley Relay (leg 4) | 2025-07-24 | 2025 SI LC AG CHAMPS |
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 10 & under · SCY
1866 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:49.02 | 483 |
| 100 BK SCY | 1:31.67 | 426 |
| 100 FL SCY | 1:30.55 | 457 |
| 200 IM SCY | 3:10.01 | 500 |
| 100 BR SCY | — | 0 |
IMR 10 & under · SCY
2108 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 FR SCY | 1:15.08 | 528 |
| 50 BK SCY | 40.29 | 510 |
| 50 FL SCY | 36.45 | 602 |
| 100 IM SCY | 1:29.85 | 468 |
| 50 BR SCY | — | 0 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Backstroke SCY 1:31.67
Front half 44.06s · back half 47.61s
100 Individual Medley SCY 1:29.85
Front half 41.39s · back half 48.46s
100 Freestyle LCM 1:24.03
Front half 40.27s · back half 43.76s
200 Freestyle LCM 3:06.74
Progression
Faster times are higher. One card per event, all courses & history.