swimNatalie Sierzanowski
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 100 Freestyle | SCY | 54.45 | AA+0.66s to AAA | 2025-03-14 | 2025 MN RSC CZ North Section Spring Champions venue |
| 100 Backstroke | SCY | 58.14 | AAA+2.35s to AAAA | 2025-01-01 | 2025 USA Swimming Speedo Championship Series |
| 100 Breaststroke | SCY | 1:10.98 | A+0.99s to AA | 2025-03-16 | 2025 MN RSC CZ North Section Spring Champions venue |
| 100 Butterfly | SCY | 58.17 | AA+0.18s to AAA | 2025-01-01 | 2025 USA Swimming Speedo Championship Series |
| 50 Freestyle | LCM | 28.63 | AA+0.24s to AAA | 2024-07-27 | 2024 USAS Futures Championships-Minneapolis venue |
| 50 Backstroke | LCM | 32.45 | AAA+1.06s to AAAA | 2025-08-01 | 2025 LC Illinois Senior Championships venue |
| 100 Backstroke | LCM | 1:08.18 | AA+0.19s to AAA | 2024-07-12 | 2024 CZ North Section Summer Sectionals venue |
| 200 Backstroke | LCM | 2:31.41 | AA+3.62s to AAA | 2024-07-27 | 2024 USAS Futures Championships-Minneapolis venue |
| 50 Breaststroke | LCM | 39.00 | A+1.01s to AA | 2019-08-03 | 2019 WI Central Zone 14 & U Championship slow pool |
| 100 Breaststroke | LCM | 1:19.58 | AA+2.29s to AAA | 2025-08-01 | 2025 LC Illinois Senior Championships venue |
| 50 Butterfly | LCM | 30.19 | AAA+1.10s to AAAA | 2025-08-02 | 2025 LC Illinois Senior Championships venue |
| 100 Butterfly | LCM | 1:06.00 | AAA+2.91s to AAAA | 2024-07-13 | 2024 CZ North Section Summer Sectionals venue |
| 200 Butterfly | LCM | 2:29.83 | AA+3.44s to AAA | 2024-07-11 | 2024 CZ North Section Summer Sectionals venue |
| 200 Individual Medley | LCM | 2:34.90 | AA+5.41s to AAA | 2024-07-14 | 2024 CZ North Section Summer Sectionals venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 18.
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 |
|---|---|---|---|---|---|---|
| 200 Freestyle | LCM | 2:17.57 | flying | 800 Free Relay (leg 4) | 2024-07-13 | 2024 CZ North Section Summer Sectionals |
| 100 Butterfly | LCM | 1:06.00 | flying | 400 Medley Relay (leg 3) | 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 · LCM
2335 points (3/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 BK LCM | 2:31.41 | 778 |
| 200 FL LCM | 2:29.83 | 787 |
| 200 IM LCM | 2:34.90 | 770 |
| 400 FR LCM | — | 0 |
| 200 BR LCM | — | 0 |
| 400 IM LCM | — | 0 |
IMR 17-18 · LCM
3246 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BK LCM | 1:08.18 | 846 |
| 100 BR LCM | 1:19.58 | 774 |
| 100 FL LCM | 1:06.00 | 856 |
| 200 IM LCM | 2:34.90 | 770 |
| 200 FR 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 54.45
Front half 26.86s · back half 27.59s
100 Backstroke SCY 58.14 split/total mismatch
100 Breaststroke SCY 1:10.98
Front half 33.52s · back half 37.46s
100 Backstroke LCM 1:08.18 RT 0.72s
Front half 33.42s · back half 34.76s
200 Backstroke LCM 2:31.41
Front half 74.39s · back half 77.02s
100 Breaststroke LCM 1:19.58 RT 0.66s
Front half 36.58s · back half 43.00s
100 Butterfly LCM 1:06.00 RT 0.72s
Front half 31.30s · back half 34.70s
200 Butterfly LCM 2:29.83 RT 0.71s
Front half 71.10s · back half 78.73s
200 Individual Medley LCM 2:34.90 RT 0.73s
Front half 72.05s · back half 82.85s
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.
Progression
Faster times are higher. One card per event, all courses & history.