Hayden Karasiewicz
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 25 Freestyle | SCY | 14.52 | 2022-04-03 | 2022 LBA Sprint to the Finish Mini Meetvenue | |
| 50 Freestyle | SCY | 26.79 | AA+0.60s to AAA·+2.00s to Sectionals | 2026-03-05 | 2025 Speedo MD LSC Senior Champs |
| 100 Freestyle | SCY | 59.81 | A+0.22s to AA·+6.72s to Sectionals | 2025-12-12 | 2025 East Coast WinterFestvenue |
| 200 Freestyle | SCY | 2:10.55 | A+0.96s to AA·+15.56s to Sectionals | 2026-02-07 | 2026 Last Chance Qualifying Meetvenue |
| 500 Freestyle | SCY | 5:59.02 | A+13.53s to AA·+50.23s to Sectionals | 2026-01-23 | 2026 USAS IMX Gamesvenue |
| 1000 Freestyle | SCY | 12:38.88 | BB+8.19s to A·+119.89s to Sectionals | 2025-12-21 | The Grinch Stole My Times (distance) 2025venue |
| 1650 Freestyle | SCY | 20:50.72 | BB+2.03s to A·+181.33s to Sectionals | 2025-12-21 | The Grinch Stole My Times (distance) 2025venue |
| 25 Backstroke | SCY | 18.83 | 2022-04-03 | 2022 LBA Sprint to the Finish Mini Meetvenue | |
| 50 Backstroke | SCY | 31.78 | A+1.19s to AA·+5.49s to Futures | 2025-12-12 | 2025 East Coast WinterFestvenue |
| 100 Backstroke | SCY | 1:05.57 | A+0.48s to AA·+6.28s to Sectionals | 2026-03-08 | 2026 MD LSC 14 & U Championshipsvenue |
| 200 Backstroke | SCY | 2:29.05 | BB+2.46s to A·+20.16s to Sectionals | 2025-12-14 | 2025 East Coast WinterFestvenue |
| 25 Breaststroke | SCY | 21.05 | 2022-04-03 | 2022 LBA Sprint to the Finish Mini Meetvenue | |
| 50 Breaststroke | SCY | 37.25 | BB+0.26s to A·+7.46s to Futures | 2026-02-07 | 2026 Last Chance Qualifying Meetvenue |
| 100 Breaststroke | SCY | 1:19.19 | BB+1.20s to A·+11.00s to Sectionals | 2026-01-23 | 2026 USAS IMX Gamesvenue |
| 200 Breaststroke | SCY | 2:49.70 | BB+1.71s to A·+20.31s to Sectionals | 2026-02-08 | 2026 Last Chance Qualifying Meetvenue |
| 25 Butterfly | SCY | 15.80 | 2022-04-03 | 2022 LBA Sprint to the Finish Mini Meetvenue | |
| 50 Butterfly | SCY | 28.86 | AA+0.07s to AAA·+3.17s to Futures | 2026-03-05 | 2025 Speedo MD LSC Senior Champs |
| 100 Butterfly | SCY | 1:03.22 | AA+1.23s to AAA·+4.73s to Sectionals | 2026-03-08 | 2026 MD LSC 14 & U Championshipsvenue |
| 200 Butterfly | SCY | 2:28.99 | A+4.20s to AA·+16.90s to Sectionals | 2026-03-07 | 2026 MD LSC 14 & U Championshipsvenue |
| 100 Individual Medley | SCY | 1:07.89 | 2025-11-14 | ISCA Fall Classic Championship 2025venue | |
| 200 Individual Medley | SCY | 2:25.86 | A+0.77s to AA·+15.17s to Sectionals | 2026-01-24 | 2026 USAS IMX Gamesvenue |
| 400 Individual Medley | SCY | 5:16.71 | A+9.42s to AA·+38.32s to Sectionals | 2025-12-20 | The Grinch Stole My Times (distance) 2025venue |
| 50 Freestyle | LCM | 30.94 | AA+1.05s to AAA·+2.65s to Sectionals | 2025-07-20 | 2025 MD Long Course Last Chance Meetvenue |
| 100 Freestyle | LCM | 1:09.67 | A+1.68s to AA·+8.98s to Sectionals | 2026-07-29 | 2026 MD LSC LC Championshipvenue |
| 200 Freestyle | LCM | 2:37.50 | BB+2.81s to A·+26.61s to Sectionals | 2025-05-11 | 2025 NAAC MOTHER'S DAY MEETvenue |
| 400 Freestyle | LCM | 5:29.69 | BB+4.70s to A·+52.00s to Sectionals | 2025-07-18 | 2025 MD Long Course Last Chance Meetvenue |
| 50 Backstroke | LCM | 36.58 | A+0.59s to AA·+5.69s to Futures | 2026-07-29 | 2026 MD LSC LC Championshipvenue |
| 100 Backstroke | LCM | 1:19.49 | BB+0.10s to A·+11.60s to Sectionals | 2026-07-31 | 2026 MD LSC LC Championshipvenue |
| 200 Backstroke | LCM | 2:51.94 | BB+0.75s to A·+25.75s to Sectionals | 2026-07-10 | 2026 NBAC Mid Summer Classicvenue |
| 50 Breaststroke | LCM | 44.43 | BB+2.34s to A·+9.64s to Futures | 2025-07-20 | 2025 MD Long Course Last Chance Meetvenue |
| 100 Breaststroke | LCM | 1:42.14 | B+4.85s to BB·+24.25s to Sectionals | 2025-01-01 | 2025 nbac mid summer classic final results pdf |
| 200 Breaststroke | LCM | 3:42.81 | B+13.12s to BB·+53.42s to Sectionals | 2024-07-01 | KA Firecracker Classic Long Course A/BB/C Invitational |
| 50 Butterfly | LCM | 33.05 | AA+0.66s to AAA·+3.56s to Futures | 2026-07-30 | 2026 MD LSC LC Championshipvenue |
| 100 Butterfly | LCM | 1:13.66 | AA+3.07s to AAA·+7.37s to Sectionals | 2026-07-10 | 2026 NBAC Mid Summer Classicvenue |
| 200 Butterfly | LCM | 2:54.90 | BB+2.31s to A·+25.81s to Sectionals | 2025-08-02 | 2025 MD LSC LC Championshipsvenue |
| 200 Individual Medley | LCM | 2:56.92 | BB+3.43s to A·+28.53s to Sectionals | 2025-07-19 | 2025 MD Long Course Last Chance Meetvenue |
| 400 Individual Medley | LCM | 6:17.43 | BB+8.94s to A·+56.94s to Sectionals | 2026-05-29 | 2026 Eagle Swim Team Speedo Sizzlerslow pool |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 13.
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 | 30.45 | flat | 200 Free Relay | 2023-11-18 | 2023 ISCA Fall Classic Championship |
| 50 Freestyle | SCY | 27.88 | flying | 200 Medley Relay (leg 4) | 2025-11-14 | ISCA Fall Classic Championship 2025 |
| 50 Freestyle | SCY | 26.05 | flying | 200 Free Relay (leg 4) | 2025-10-18 | 2025 Fox Fall Invitational 1 - copied |
| 100 Freestyle | SCY | 1:13.39 | flat | 400 Free Relay | 2023-11-19 | 2023 ISCA Fall Classic Championship |
| 100 Freestyle | SCY | 1:00.66 | flying | 400 Free Relay (leg 4) | 2025-11-16 | ISCA Fall Classic Championship 2025 |
| 50 Backstroke | SCY | 41.07 | flat | 200 Medley Relay | 2021-11-06 | 2021 VA SwimRVA Fall Festival |
| 50 Butterfly | SCY | 28.77 | flying | 200 Medley Relay (leg 3) | 2026-03-05 | 2026 MD LSC 14 & U Championships |
| 100 Butterfly | SCY | 1:06.41 | flying | 400 Medley Relay (leg 3) | 2026-03-06 | 2026 MD LSC 14 & U Championships |
| 100 Freestyle | LCM | 1:14.16 | flying | 400 Free Relay (leg 3) | 2024-08-01 | 2024 MD LSC LC Championships |
| 100 Freestyle | LCM | 1:13.05 | flying | 400 Medley Relay (leg 4) | 2024-08-02 | 2024 MD LSC LC Championships |
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 13-14 · SCY
3802 points (6/6 events)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:59.02 | 638 |
| 200 BK SCY | 2:29.05 | 586 |
| 200 BR SCY | 2:49.70 | 602 |
| 200 FL SCY | 2:28.99 | 639 |
| 200 IM SCY | 2:25.86 | 688 |
| 400 IM SCY | 5:16.71 | 649 |
IMR 13-14 · SCY
3403 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:10.55 | 688 |
| 100 BK SCY | 1:05.57 | 681 |
| 100 BR SCY | 1:19.19 | 591 |
| 100 FL SCY | 1:03.22 | 755 |
| 200 IM SCY | 2:25.86 | 688 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 59.81
Front half 29.19s · back half 30.62s
200 Freestyle SCY 2:10.55
Front half 64.53s · back half 66.02s
500 Freestyle SCY 5:59.02
Front half 176.60s · back half 182.42s
1000 Freestyle SCY 12:38.88
1650 Freestyle SCY 20:50.72
100 Backstroke SCY 1:05.57
Front half 32.54s · back half 33.03s
200 Backstroke SCY 2:29.05
Front half 73.65s · back half 75.40s
100 Breaststroke SCY 1:19.19
Front half 38.14s · back half 41.05s
200 Breaststroke SCY 2:49.70
Front half 81.41s · back half 88.29s
100 Butterfly SCY 1:03.22
Front half 30.31s · back half 32.91s
200 Butterfly SCY 2:28.99
Front half 69.16s · back half 79.83s
100 Individual Medley SCY 1:07.89
Front half 31.76s · back half 36.13s
200 Individual Medley SCY 2:25.86
Front half 68.65s · back half 77.21s
400 Individual Medley SCY 5:16.71
Front half 150.70s · back half 166.01s
100 Freestyle LCM 1:09.67
Front half 32.97s · back half 36.70s
200 Freestyle LCM 2:37.50
Front half 77.04s · back half 80.46s
400 Freestyle LCM 5:29.69
Front half 163.34s · back half 166.35s
100 Backstroke LCM 1:19.49
Front half 38.64s · back half 40.85s
200 Backstroke LCM 2:51.94
Front half 84.17s · back half 87.77s
100 Breaststroke LCM 1:42.14
Front half 49.30s · back half 52.84s
200 Breaststroke LCM 3:42.81 split/total mismatch
100 Butterfly LCM 1:13.66
Front half 35.19s · back half 38.47s
200 Butterfly LCM 2:54.90
Front half 79.88s · back half 95.02s
200 Individual Medley LCM 2:56.92
Front half 82.89s · back half 94.03s
400 Individual Medley LCM 6:17.43
Front half 179.09s · back half 198.34s
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.