swimMarcelina Korszen
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 27.95 | A+0.56s to AA | 2024-11-15 | 2024 MR COND November IMX Invitational |
| 500 Freestyle | SCY | 5:47.05 | A+1.56s to AA | 2025-04-11 | 2025 Boys & Girls Clubs National Swim Champs venue |
| 50 Backstroke | SCY | 29.18 | AAA+1.29s to AAAA | 2025-04-04 | 2025 Eastern Zone SC Age Group Championships venue |
| 100 Backstroke | SCY | 1:01.22 | AAA+1.73s to AAAA | 2025-04-05 | 2025 Eastern Zone SC Age Group Championships venue |
| 200 Backstroke | SCY | 2:12.64 | AAA+4.45s to AAAA | 2025-04-03 | 2025 Eastern Zone SC Age Group Championships venue |
| 50 Breaststroke | SCY | 34.86 | AA+0.87s to AAA | 2024-04-13 | 2024 Boys & Girls Clubs National Swim Champs venue |
| 100 Breaststroke | SCY | 1:14.82 | A+0.13s to AA | 2025-04-13 | 2025 Boys & Girls Clubs National Swim Champs venue |
| 200 Breaststroke | SCY | 2:40.73 | AA+6.74s to AAA | 2025-03-20 | 2025 NJS & Scarlet Gold Championship |
| 50 Butterfly | SCY | 28.30 | AAA+0.81s to AAAA | 2026-03-19 | 2026 NJS & Scarlet 11 & Over Gold Champs |
| 100 Butterfly | SCY | 1:01.60 | AAA+2.41s to AAAA | 2025-04-12 | 2025 Boys & Girls Clubs National Swim Champs venue |
| 100 Individual Medley | SCY | 1:05.02 | 2025-04-13 | 2025 Boys & Girls Clubs National Swim Champs venue | |
| 200 Individual Medley | SCY | 2:19.43 | AA+0.64s to AAA | 2025-03-20 | 2025 NJS & Scarlet Gold Championship |
| 400 Individual Medley | SCY | 4:55.77 | AA+1.78s to AAA | 2025-03-20 | 2025 NJS & Scarlet Gold Championship |
| 50 Backstroke | LCM | 39.18 | BB+1.69s to A | 2023-01-01 | Metropolitan Swimming Club |
| 100 Backstroke | LCM | 1:24.33 | BB+4.94s to A | 2023-01-01 | Metropolitan Swimming Club |
| 50 Breaststroke | LCM | 47.86 | B+2.27s to BB | 2023-01-01 | Metropolitan Swimming Club |
| 100 Breaststroke | LCM | 1:40.94 | B+3.65s to BB | 2023-01-01 | Metropolitan Swimming Club |
| 50 Butterfly | LCM | 38.77 | B+0.48s to BB | 2023-01-01 | Metropolitan Swimming Club |
| 200 Individual Medley | LCM | 3:08.67 | B+0.78s to BB | 2023-04-29 | 2023 MR LIAC Speedo Long Island Challenge venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 13.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Freestyle | SCY | 27.93 | flat | 200 Free Relay | 2025-04-04 | 2025 Eastern Zone SC Age Group 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
3832 points (5/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:47.05 | 707 |
| 200 BK SCY | 2:12.64 | 832 |
| 200 BR SCY | 2:40.73 | 708 |
| 200 IM SCY | 2:19.43 | 788 |
| 400 IM SCY | 4:55.77 | 797 |
| 200 FL SCY | — | 0 |
IMR 13-14 · SCY
3142 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BK SCY | 1:01.22 | 836 |
| 100 BR SCY | 1:14.82 | 701 |
| 100 FL SCY | 1:01.60 | 817 |
| 200 IM SCY | 2:19.43 | 788 |
| 200 FR SCY | — | 0 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
50 Freestyle SCY 27.95 split/total mismatch
Front half 73.62s · back half -45.67s
500 Freestyle SCY 5:47.05
Front half 170.16s · back half 176.89s
100 Backstroke SCY 1:01.22
Front half 29.91s · back half 31.31s
200 Backstroke SCY 2:12.64
Front half 64.24s · back half 68.40s
100 Breaststroke SCY 1:14.82
Front half 35.54s · back half 39.28s
100 Butterfly SCY 1:01.60
Front half 29.42s · back half 32.18s
100 Individual Medley SCY 1:05.02
Front half 29.11s · back half 35.91s
100 Backstroke LCM 1:24.33
Front half 41.51s · back half 42.82s
100 Breaststroke LCM 1:40.94
Front half 47.83s · back half 53.11s
200 Individual Medley LCM 3:08.67
Front half 90.58s · back half 98.09s
Progression
Faster times are higher. One card per event, all courses & history.