swimSebastian Kozlenko
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 25 Freestyle | SCY | 21.15 | 2023-01-13 | CT SYS Stingray Winter Classicvenue | |
| 50 Freestyle | SCY | 33.02 | B+0.43s to BB·+10.63s to Sectionals | 2026-02-27 | 022726wyw results |
| 100 Freestyle | SCY | 1:22.65 | +6.56s to B·+34.16s to Sectionals | 2025-03-01 | 030125wyw results rev030425 2 |
| 200 Freestyle | SCY | 3:01.80 | +15.21s to B·+75.51s to Sectionals | 2025-03-01 | 030125wyw results rev030425 2 |
| 25 Backstroke | SCY | 24.72 | 2023-01-13 | CT SYS Stingray Winter Classicvenue | |
| 50 Backstroke | SCY | 40.13 | B+2.04s to BB·+16.44s to Futures | 2025-12-12 | 2025 CT BULL Hutch Invite |
| 100 Backstroke | SCY | 1:25.49 | B+2.80s to BB·+31.00s to Sectionals | 2026-02-27 | 022726wyw results |
| 25 Breaststroke | SCY | 32.00 | 2023-01-13 | CT SYS Stingray Winter Classicvenue | |
| 50 Breaststroke | SCY | 44.88 | B+1.69s to BB·+18.59s to Futures | 2025-12-12 | 2025 CT BULL Hutch Invite |
| 100 Breaststroke | SCY | 1:37.62 | B+5.03s to BB·+36.13s to Sectionals | 2025-12-12 | 2025 CT BULL Hutch Invite |
| 200 Breaststroke | SCY | 3:32.18 | B+13.29s to BB·+77.19s to Sectionals | 2026-01-16 | 011626sys results |
| 25 Butterfly | SCY | 21.69 | 2025-02-23 | 022325hhac resultsrev022625 | |
| 50 Butterfly | SCY | 39.55 | B+2.66s to BB·+16.66s to Futures | 2025-12-12 | 2025 CT BULL Hutch Invite |
| 100 Butterfly | SCY | 1:08.15 | AAA+3.66s to AAAA·+14.96s to Sectionals | 2025-03-01 | 030125wyw results rev030425 2 |
| 100 Individual Medley | SCY | 1:24.43 | B+2.74s to BB | 2026-02-27 | 022726wyw results |
| 200 Individual Medley | SCY | 3:03.41 | B+5.22s to BB·+64.02s to Sectionals | 2026-01-16 | 011626sys results |
| 50 Freestyle | LCM | 36.74 | BB+2.55s to A·+11.25s to Sectionals | 2026-07-24 | CT GRIT Club Champsfast pool |
| 100 Freestyle | LCM | 1:30.91 | +3.12s to B·+35.42s to Sectionals | 2025-06-20 | CAC Destination Athlete Northeasvenue |
| 200 Freestyle | LCM | 3:19.07 | +9.28s to B·+77.78s to Sectionals | 2025-06-20 | CAC Destination Athlete Northeasvenue |
| 400 Freestyle | LCM | 6:28.93 | B+15.84s to BB·+131.34s to Sectionals | 2026-07-24 | CT GRIT Club Champsfast pool |
| 1000 Freestyle | LCM | 13:01.89 | 2026-06-27 | 2026 CT Open Water Championship | |
| 50 Backstroke | LCM | 49.71 | +2.12s to B·+21.82s to Futures | 2025-05-02 | CT RYWC May Crazy Meet |
| 100 Backstroke | LCM | 6:25.12 | +280.43s to B·+323.13s to Sectionals | 2026-05-15 | RYWC Mako Meetvenue |
| 200 Backstroke | LCM | 2:59.02 | A+0.83s to AA·+44.23s to Sectionals | 2026-07-24 | CT GRIT Club Champsfast pool |
| 50 Breaststroke | LCM | 48.09 | BB+3.10s to A·+17.20s to Futures | 2026-05-01 | 2026 CT RYWC Mako May Crazyvenue |
| 100 Breaststroke | LCM | 1:35.87 | A+1.08s to AA·+26.18s to Sectionals | 2025-05-02 | CT RYWC May Crazy Meet |
| 50 Butterfly | LCM | 38.32 | BB+0.33s to A·+12.03s to Futures | 2026-05-28 | WYW Trials/Finals Meetvenue |
| 200 Individual Medley | LCM | 3:36.62 | B+12.53s to BB·+80.43s to Sectionals | 2026-05-01 | 2026 CT RYWC Mako May Crazyvenue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 11.
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.
IMX / IMR
IMX 11-12 · SCY
1694 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BK SCY | 1:25.49 | 336 |
| 100 BR SCY | 1:37.62 | 334 |
| 100 FL SCY | 1:08.15 | 651 |
| 200 IM SCY | 3:03.41 | 373 |
| 500 FR SCY | — | 0 |
IMR 11-12 · LCM
1838 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 3:19.07 | 307 |
| 50 BK LCM | 49.71 | 281 |
| 50 BR LCM | 48.09 | 422 |
| 50 FL LCM | 38.32 | 493 |
| 200 IM LCM | 3:36.62 | 335 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
25 Freestyle SCY 21.15 split/total mismatch
Front half 1018.04s · back half -996.89s
100 Freestyle SCY 1:22.65 split/total mismatch
Front half 39.39s · back half 43.26s
100 Breaststroke SCY 1:37.62 split/total mismatch
200 Breaststroke SCY 3:32.18 split/total mismatch
100 Butterfly SCY 1:08.15 split/total mismatch
200 Individual Medley SCY 3:03.41 split/total mismatch
400 Freestyle LCM 6:28.93 split/total mismatch
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.