Kaj Kosinski
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 24.01 | A+0.62s to AA·+0.82s to Sectionals | 2025-09-21 | 2025 TSM Aquatics Season Openervenue |
| 100 Freestyle | SCY | 52.51 | A+1.22s to AA·+1.52s to Sectionals | 2026-03-01 | 2026 Pacific Committee SC Chmpionshipvenue |
| 200 Freestyle | SCY | 1:55.97 | A+3.98s to AA·+4.18s to Sectionals | 2025-02-23 | 2025 Pacific Committee SC Championshipvenue |
| 500 Freestyle | SCY | 5:14.64 | A+10.35s to AA·+11.95s to Sectionals | 2025-02-22 | 2025 Pacific Committee SC Championshipvenue |
| 1000 Freestyle | SCY | 10:51.02 | A+17.03s to AA·+17.03s to Sectionals | 2024-12-15 | 2024 CA RAA/SCS WAGvenue |
| 50 Breaststroke | SCY | 28.94 | AA+0.05s to AAA·+2.65s to Futures | 2026-03-01 | 2026 Pacific Committee SC Chmpionshipvenue |
| 100 Breaststroke | SCY | 1:04.20 | A+1.01s to AA·+1.01s to Sectionals | 2025-09-21 | 2025 TSM Aquatics Season Openervenue |
| 200 Breaststroke | SCY | 2:13.96 | AA+2.67s to AAA·Sectionals ✓+5.97s to Futures | 2026-02-28 | 2026 Pacific Committee SC Chmpionshipvenue |
| 50 Butterfly | SCY | 27.17 | A+1.08s to AA·+4.28s to Futures | 2025-11-15 | BCA Fall Festivalvenue |
| 100 Butterfly | SCY | 59.89 | BB+2.20s to A·+4.70s to Sectionals | 2025-09-20 | 2025 TSM Aquatics Season Openervenue |
| 200 Individual Medley | SCY | 2:07.86 | A+3.57s to AA·+3.87s to Sectionals | 2026-03-01 | 2026 Pacific Committee SC Chmpionshipvenue |
| 400 Individual Medley | SCY | 4:34.93 | A+8.84s to AA·+10.24s to Sectionals | 2025-12-13 | 2025 CA GWSC Winter Age Group Invitationalvenue |
| 50 Freestyle | LCM | 27.50 | A+0.41s to AA·+0.51s to Sectionals | 2025-07-18 | 2025 Summer Pacific Champs @BLASTvenue |
| 100 Freestyle | LCM | 59.48 | A+0.49s to AA·+0.49s to Sectionals | 2026-06-06 | 2026 BCA June LC Meetvenue |
| 200 Freestyle | LCM | 2:14.55 | A+5.36s to AA·+5.86s to Sectionals | 2026-07-11 | 2026 Summer Pacific Champs @BLAST - copied -venue |
| 400 Freestyle | LCM | 4:49.88 | BB+2.29s to A·+15.49s to Sectionals | 2026-06-06 | 2026 BCA June LC Meetvenue |
| 800 Freestyle | LCM | 9:58.84 | BB+2.65s to A·+28.85s to Sectionals | 2025-07-27 | 2025 CA SCS/RAA Summer A/G Champsvenue |
| 200 Backstroke | LCM | 2:40.43 | B+0.44s to BB·+18.94s to Sectionals | 2025-06-14 | 2025 June Age Group Invitevenue |
| 50 Breaststroke | LCM | 32.68 | AAA+1.19s to AAAA·+1.79s to Futures | 2026-06-12 | 2026 SCS June AG Invitevenue |
| 100 Breaststroke | LCM | 1:11.80 | AA+1.21s to AAA·Sectionals ✓+3.61s to Futures | 2026-07-16 | 2026 CA/NV Summer Speedo Sectionals @ BREA -venue |
| 200 Breaststroke | LCM | 2:35.72 | AA+2.23s to AAA·Sectionals ✓+6.63s to Futures | 2026-07-16 | 2026 CA/NV Summer Speedo Sectionals @ BREA -venue |
| 100 Butterfly | LCM | 1:09.74 | BB+3.75s to A·+6.65s to Sectionals | 2025-07-19 | 2025 Summer Pacific Champs @BLASTvenue |
| 200 Individual Medley | LCM | 2:26.83 | A+1.84s to AA·+2.14s to Sectionals | 2025-07-20 | 2025 Summer Pacific Champs @BLASTvenue |
| 400 Individual Medley | LCM | 5:14.28 | A+5.29s to AA·+6.49s to Sectionals | 2026-06-11 | 2026 SCS June AG Invitevenue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 16.
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 | 24.07 | flat | 200 Free Relay | 2025-09-20 | 2025 TSM Aquatics Season Opener |
| 100 Freestyle | SCY | 54.24 | flying | 400 Free Relay (leg 2) | 2025-02-22 | 2025 Pacific Committee SC Championship |
| 200 Freestyle | SCY | 1:55.01 | flying | 800 Free Relay (leg 3) | 2024-12-13 | 2024 CA RAA/SCS WAG |
| 50 Breaststroke | SCY | 30.11 | flying | 200 Medley Relay (leg 2) | 2025-02-22 | 2025 Pacific Committee SC Championship |
| 50 Butterfly | SCY | 26.96 | flying | 200 Medley Relay (leg 3) | 2025-09-21 | 2025 TSM Aquatics Season Opener |
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 · LCM
3433 points (5/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 400 FR LCM | 4:49.88 | 646 |
| 200 BK LCM | 2:40.43 | 522 |
| 200 BR LCM | 2:35.72 | 822 |
| 200 IM LCM | 2:26.83 | 728 |
| 400 IM LCM | 5:14.28 | 715 |
| 200 FL LCM | — | 0 |
IMR 15-16 · LCM
2771 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:14.55 | 665 |
| 100 BR LCM | 1:11.80 | 815 |
| 100 FL LCM | 1:09.74 | 563 |
| 200 IM LCM | 2:26.83 | 728 |
| 100 BK LCM | — | 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 52.51
Front half 25.18s · back half 27.33s
200 Freestyle SCY 1:55.97
Front half 56.93s · back half 59.04s
500 Freestyle SCY 5:14.64
Front half 154.00s · back half 160.64s
1000 Freestyle SCY 10:51.02
Front half 325.02s · back half 326.00s
100 Breaststroke SCY 1:04.20
Front half 30.27s · back half 33.93s
200 Breaststroke SCY 2:13.96
Front half 64.09s · back half 69.87s
100 Butterfly SCY 59.89
Front half 28.04s · back half 31.85s
200 Individual Medley SCY 2:07.86
Front half 63.12s · back half 64.74s
400 Individual Medley SCY 4:34.93
Front half 137.53s · back half 137.40s
200 Freestyle LCM 2:14.55
Front half 65.53s · back half 69.02s
400 Freestyle LCM 4:49.88
Front half 141.54s · back half 148.34s
800 Freestyle LCM 9:58.84
Front half 298.31s · back half 300.53s
200 Backstroke LCM 2:40.43
Front half 78.23s · back half 82.20s
100 Breaststroke LCM 1:11.80 RT 0.68s
Front half 33.81s · back half 37.99s
200 Breaststroke LCM 2:35.72 RT 0.71s
Front half 75.07s · back half 80.65s
200 Individual Medley LCM 2:26.83
Front half 71.26s · back half 75.57s
400 Individual Medley LCM 5:14.28
Front half 155.49s · back half 158.79s
Reaction time
From electronically-timed starts only (~2% of corpus swims carry a reaction time). PRs with a recorded reaction show an RT chip in the splits section above.
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.