swimWiliam Kucmierczyk
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 21.48 | AAA+0.39s to AAAA·Sectionals ✓+0.19s to Futures | 2026-03-28 | 2026 EZ North Speedo Short Course Sectionalsvenue |
| 100 Freestyle | SCY | 47.92 | AAA+1.83s to AAAA·Sectionals ✓+1.53s to Futures | 2026-03-19 | 2026 NJS & Scarlet 11 & Over Gold Champs |
| 200 Freestyle | SCY | 1:42.74 | AAA+1.25s to AAAA·Sectionals ✓+1.15s to Futures | 2026-03-27 | 2026 EZ North Speedo Short Course Sectionalsvenue |
| 500 Freestyle | SCY | 4:49.09 | AA+0.50s to AAA·Sectionals ✓+12.00s to Futures | 2026-03-19 | 2026 NJS & Scarlet 11 & Over Gold Champs |
| 100 Backstroke | SCY | 51.00 | AAA+0.91s to AAAA·Futures ✓+1.81s to Winter JNs | 2026-03-28 | 2026 EZ North Speedo Short Course Sectionalsvenue |
| 200 Backstroke | SCY | 1:51.73 | AAA+2.14s to AAAA·Futures ✓+3.94s to Winter JNs | 2026-03-29 | 2026 EZ North Speedo Short Course Sectionalsvenue |
| 50 Butterfly | SCY | 23.96 | AAA+0.57s to AAAA·+0.27s to Sectionals | 2026-03-19 | 2026 NJS & Scarlet 11 & Over Gold Champs |
| 100 Butterfly | SCY | 51.78 | AAA+2.19s to AAAA·Sectionals ✓+1.19s to Futures | 2026-03-27 | 2026 EZ North Speedo Short Course Sectionalsvenue |
| 200 Butterfly | SCY | 2:07.56 | BB+0.07s to A·+4.77s to Sectionals | 2025-03-20 | 2025 NJS & Scarlet Gold Championship |
| 200 Individual Medley | SCY | 1:56.11 | AAA+3.92s to AAAA·Sectionals ✓+2.22s to Futures | 2026-03-29 | 2026 EZ North Speedo Short Course Sectionalsvenue |
| 50 Freestyle | LCM | 25.93 | AA+0.44s to AAA·Sectionals ✓+1.34s to Futures | 2025-08-10 | 2025 LC Senior Zone Championshipvenue |
| 100 Freestyle | LCM | 54.06 | AAA+1.07s to AAAA·Sectionals ✓+0.47s to Futures | 2026-07-09 | 2024 Speedo Grand Chalenge |
| 200 Freestyle | LCM | 1:58.34 | AAA+1.75s to AAAA·Sectionals ✓+0.55s to Futures | 2026-07-09 | 2026 CENTRAL ZONE NORTH SUMMER CHAMPIONSHIPSvenue |
| 50 Backstroke | LCM | 28.08 | AAA+0.09s to AAAA·Sectionals ✓+0.19s to Futures | 2026-07-09 | 2024 Speedo Grand Chalenge |
| 100 Backstroke | LCM | 59.14 | AAA+0.05s to AAAA·Futures ✓+0.35s to Winter JNs | 2026-07-09 | 2024 Speedo Grand Chalenge |
| 200 Backstroke | LCM | 2:11.91 | AAA+3.22s to AAAA·Sectionals ✓+0.02s to Futures | 2026-07-09 | 2024 Speedo Grand Chalenge |
| 100 Butterfly | LCM | 57.91 | AAA+0.92s to AAAA·Futures ✓+1.42s to Winter JNs | 2026-07-09 | 2024 Speedo Grand Chalenge |
| 200 Individual Medley | LCM | 2:12.73 | AAA+2.74s to AAAA·Futures ✓+3.44s to Winter JNs | 2026-07-09 | 2024 Speedo Grand Chalenge |
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.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Freestyle | SCY | 20.83 | flying | 200 Free Relay (leg 3) | 2026-03-29 | 2026 EZ North Speedo Short Course Sectionals |
| 100 Freestyle | SCY | 46.97 | flying | 400 Free Relay (leg 4) | 2026-03-28 | 2026 EZ North Speedo Short Course Sectionals |
| 200 Freestyle | SCY | 1:43.16 | flying | 800 Free Relay (leg 3) | 2026-03-27 | 2026 EZ North Speedo Short Course Sectionals |
| 100 Backstroke | SCY | 52.71 | flat | 400 Medley Relay | 2026-03-29 | 2026 EZ North Speedo Short Course Sectionals |
| 50 Freestyle | LCM | 24.56 | flat | 200 Free Relay | 2026-07-09 | 2026 CENTRAL ZONE NORTH SUMMER CHAMPIONSHIPS |
| 100 Freestyle | LCM | 54.43 | flying | 400 Free Relay (leg 2) | 2026-07-11 | 2026 CENTRAL ZONE NORTH SUMMER CHAMPIONSHIPS |
| 200 Freestyle | LCM | 58.85 | flying | 800 Free Relay (leg 3) | 2025-08-09 | 2025 LC Senior Zone Championship |
| 50 Backstroke | LCM | 29.76 | flat | 200 Medley Relay | 2026-07-09 | 2026 CENTRAL ZONE NORTH SUMMER CHAMPIONSHIPS |
| 100 Backstroke | LCM | 1:00.75 | flat | 400 Medley Relay | 2026-07-12 | 2026 CENTRAL ZONE NORTH SUMMER 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 17-18 · SCY
3237 points (4/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 4:49.09 | 836 |
| 200 BK SCY | 1:51.73 | 900 |
| 200 FL SCY | 2:07.56 | 637 |
| 200 IM SCY | 1:56.11 | 864 |
| 200 BR SCY | — | 0 |
| 400 IM SCY | — | 0 |
IMR 17-18 · LCM
3682 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 1:58.34 | 910 |
| 100 BK LCM | 59.14 | 952 |
| 100 FL LCM | 57.91 | 903 |
| 200 IM LCM | 2:12.73 | 917 |
| 100 BR LCM | — | 0 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
200 Freestyle SCY 1:42.74
Front half 48.95s · back half 53.79s
100 Backstroke SCY 51.00 RT 0.59s
Front half 24.92s · back half 26.08s
200 Backstroke SCY 1:51.73 RT 0.60s
Front half 54.76s · back half 56.97s
100 Butterfly SCY 51.78
Front half 24.06s · back half 27.72s
200 Individual Medley SCY 1:56.11
Front half 53.85s · back half 62.26s
100 Freestyle LCM 54.06 RT 0.68ssplit/total mismatch
Front half 25.80s · back half 28.26s
200 Freestyle LCM 1:58.34
Front half 57.26s · back half 61.08s
100 Backstroke LCM 59.14 RT 0.66ssplit/total mismatch
Front half 28.29s · back half 30.85s
200 Backstroke LCM 2:11.91 RT 0.63ssplit/total mismatch
100 Butterfly LCM 57.91 RT 0.68ssplit/total mismatch
Front half 27.09s · back half 30.82s
200 Individual Medley LCM 2:12.73 RT 0.70ssplit/total mismatch
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.