swimMatthew Karasek
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 20.59 | AAAA·Futures ✓+0.10s to Winter JNs | 2025-01-01 | 2025 Speedo Winter Junior Championships - West |
| 100 Freestyle | SCY | 44.83 | AAAA·Winter JNs ✓+0.44s to Jr Nationals | 2025-12-13 | 2025 West Speedo Winter Juniorsvenue |
| 200 Freestyle | SCY | 1:44.59 | AAA+3.10s to AAAA·Sectionals ✓+3.00s to Futures | 2024-03-13 | 1466378 |
| 50 Backstroke | SCY | 22.98 | AAAA·Futures ✓+0.49s to Jr Nationals | 2026-03-06 | 2026 SC Illinois Senior Championships - copivenue |
| 100 Backstroke | SCY | 48.12 | AAAA·Jr Nationals ✓+0.23s to Nationals | 2025-12-12 | 2025 West Speedo Winter Juniorsvenue |
| 200 Backstroke | SCY | 1:47.25 | AAAA·Winter JNs ✓+0.76s to Jr Nationals | 2026-03-08 | 2026 SC Illinois Senior Championships - copivenue |
| 100 Breaststroke | SCY | 59.57 | AA+0.18s to AAA·Sectionals ✓+1.58s to Futures | 2024-03-13 | 1466378 |
| 100 Butterfly | SCY | 50.81 | AAA+1.22s to AAAA·Sectionals ✓+0.22s to Futures | 2025-03-07 | 2025 SC Illinois Senior Championshipsvenue |
| 200 Individual Medley | SCY | 1:50.67 | AAAA·Futures ✓+1.08s to Winter JNs | 2026-03-07 | 2026 SC Illinois Senior Championships - copivenue |
| 50 Freestyle | LCM | 23.67 | AAAA·Jr Nationals ✓+0.38s to US Open | 2026-01-01 | 2026 Speedo Junior National Championships |
| 100 Freestyle | LCM | 52.39 | AAAA·Winter JNs ✓+0.40s to Jr Nationals | 2026-08-04 | 2026 Speedo Junior National Championshipsvenue |
| 200 Freestyle | LCM | 2:04.21 | AA+2.02s to AAA·+0.72s to Sectionals | 2022-08-05 | 2025 Central Zone 14 & Under Championship Meeslow pool |
| 50 Backstroke | LCM | 26.38 | AAAA·Nationals ✓+0.29s to US Open | 2026-08-03 | 2026 Speedo Junior National Championshipsvenue |
| 100 Backstroke | LCM | 57.00 | AAAA·Jr Nationals ✓+0.11s to Nationals | 2026-08-06 | 2026 Speedo Junior National Championshipsvenue |
| 200 Backstroke | LCM | 2:09.25 | AAA+0.56s to AAAA·Futures ✓+0.96s to Winter JNs | 2026-08-05 | 2026 Speedo Junior National Championshipsvenue |
| 50 Breaststroke | LCM | 42.25 | +1.36s to B·+10.26s to Sectionals | 2019-08-01 | 2019 WI Central Zone 14 & U Championshipslow pool |
| 100 Breaststroke | LCM | 1:33.17 | +5.08s to B·+20.38s to Sectionals | 2019-08-02 | 2019 WI Central Zone 14 & U Championshipslow pool |
| 50 Butterfly | LCM | 29.34 | A+0.45s to AA·+1.95s to Sectionals | 2021-08-07 | 2025 Central Zone 14 & Under Championship Meevenue |
| 100 Butterfly | LCM | 1:06.28 | BB+1.09s to A·+4.79s to Sectionals | 2021-08-08 | 2025 Central Zone 14 & Under Championship Meevenue |
| 200 Individual Medley | LCM | 2:15.26 | AAA+5.27s to AAAA·Sectionals ✓+2.47s to Futures | 2023-08-04 | 2023 Central Zone 14 & U Championship - KSvenue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 17.
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 | 19.78 | flying | 200 Free Relay (leg 4) | 2026-03-07 | 2026 SC Illinois Senior Championships - copi |
| 50 Freestyle | SCY | 20.37 | flying | 200 Medley Relay (leg 4) | 2026-03-08 | 2026 SC Illinois Senior Championships - copi |
| 100 Freestyle | SCY | 47.58 | flat | 400 Free Relay | 2025-03-09 | 2025 SC Illinois Senior Championships |
| 100 Freestyle | SCY | 44.64 | flying | 400 Free Relay (leg 4) | 2026-03-08 | 2026 SC Illinois Senior Championships - copi |
| 200 Freestyle | SCY | 1:41.03 | flying | 800 Free Relay (leg 3) | 2026-03-06 | 2026 SC Illinois Senior Championships - copi |
| 50 Backstroke | SCY | 23.83 | flat | 200 Medley Relay | 2025-03-09 | 2025 SC Illinois Senior Championships |
| 100 Backstroke | SCY | 49.18 | flat | 400 Medley Relay | 2026-03-07 | 2026 SC Illinois Senior Championships - copi |
| 50 Freestyle | LCM | 24.87 | flat | 200 Free Relay | 2024-07-27 | 2024 LC Illinois Senior Championships |
| 50 Freestyle | LCM | 26.50 | flying | 200 Medley Relay (leg 4) | 2021-08-07 | 2025 Central Zone 14 & Under Championship Mee |
| 50 Freestyle | LCM | 23.25 | flying | 200 Free Relay (leg 4) | 2026-07-25 | 2026 LC Illinois Senior Championships |
| 100 Freestyle | LCM | 53.39 | flying | 400 Free Relay (leg 4) | 2023-08-06 | 2023 Central Zone 14 & U Championship - KS |
| 200 Freestyle | LCM | 2:00.49 | flying | 800 Free Relay (leg 4) | 2024-07-26 | 2024 LC Illinois Senior Championships |
| 50 Backstroke | LCM | 27.56 | flat | 200 Medley Relay | 2024-07-28 | 2024 LC Illinois Senior Championships |
| 100 Backstroke | LCM | 1:01.38 | flat | 400 Medley Relay | 2024-07-14 | 2024 CZ North Section Summer Sectionals |
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 17-18 · SCY
2015 points (2/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 BK SCY | 1:47.25 | 1018 |
| 200 IM SCY | 1:50.67 | 997 |
| 500 FR SCY | — | 0 |
| 200 BR SCY | — | 0 |
| 200 FL SCY | — | 0 |
| 400 IM SCY | — | 0 |
IMR 17-18 · SCY
4655 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:44.59 | 879 |
| 100 BK SCY | 48.12 | 1048 |
| 100 BR SCY | 59.57 | 830 |
| 100 FL SCY | 50.81 | 901 |
| 200 IM SCY | 1:50.67 | 997 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 44.83
Front half 21.41s · back half 23.42s
100 Backstroke SCY 48.12
Front half 23.10s · back half 25.02s
200 Backstroke SCY 1:47.25
Front half 52.51s · back half 54.74s
100 Butterfly SCY 50.81
Front half 23.67s · back half 27.14s
200 Individual Medley SCY 1:50.67
Front half 51.29s · back half 59.38s
100 Freestyle LCM 52.39 RT 0.68s
Front half 24.80s · back half 27.59s
200 Freestyle LCM 2:04.21 RT 0.71s
Front half 59.74s · back half 64.47s
100 Backstroke LCM 57.00 RT 0.82s
Front half 27.26s · back half 29.74s
200 Backstroke LCM 2:09.25 RT 0.80s
Front half 59.93s · back half 69.32s
100 Breaststroke LCM 1:33.17
Front half 44.02s · back half 49.15s
100 Butterfly LCM 1:06.28 RT 0.70s
Front half 30.30s · back half 35.98s
200 Individual Medley LCM 2:15.26
Front half 64.90s · back half 70.36s
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.