swimJP Costello
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 22.49 | AAA+0.80s to AAAA | 2025-03-01 | 2025 Ozark Division I Championship venue |
| 100 Freestyle | SCY | 48.41 | AAA+0.92s to AAAA | 2026-03-01 | Ozark Division I Championship venue |
| 200 Freestyle | SCY | 1:42.57 | AAAA | 2026-03-13 | Region VIII Speedo Spring Sectionals venue |
| 500 Freestyle | SCY | 4:39.28 | AAAA | 2026-02-27 | Ozark Division I Championship venue |
| 1000 Freestyle | SCY | 9:39.41 | AAAA | 2026-02-28 | Ozark Division I Championship venue |
| 50 Backstroke | SCY | 24.92 | AAA+0.43s to AAAA | 2025-03-16 | Region VIII Speedo Spring Sectionals venue |
| 100 Backstroke | SCY | 50.50 | AAAA | 2026-03-14 | Region VIII Speedo Spring Sectionals venue |
| 200 Backstroke | SCY | 1:50.47 | AAAA | 2026-03-12 | Region VIII Speedo Spring Sectionals venue |
| 50 Breaststroke | SCY | 37.02 | B+2.23s to BB | 2022-01-01 | winter warm up results 2022 |
| 100 Breaststroke | SCY | 1:08.11 | BB+0.72s to A | 2025-02-15 | Parkway Be My Valentine venue |
| 200 Breaststroke | SCY | 2:31.27 | BB+4.28s to A | 2025-02-16 | Parkway Be My Valentine venue |
| 50 Butterfly | SCY | 28.28 | BB+0.49s to A | 2023-01-01 | winter warm up results 2023 |
| 100 Butterfly | SCY | 52.75 | AAA+1.26s to AAAA | 2025-11-21 | 2025 Ozark A Championships venue |
| 200 Butterfly | SCY | 2:11.52 | A+5.03s to AA | 2025-02-16 | Parkway Be My Valentine venue |
| 100 Individual Medley | SCY | 1:01.07 | 2023-02-24 | 2023 Division I Championship | |
| 200 Individual Medley | SCY | 1:59.05 | AAA+3.36s to AAAA | 2025-03-02 | 2025 Ozark Division I Championship venue |
| 400 Individual Medley | SCY | 4:18.75 | AAA+10.06s to AAAA | 2024-11-22 | 2024 Ozark A Championships venue |
| 50 Freestyle | LCM | 25.99 | AAA+1.00s to AAAA | 2024-08-03 | 2024 Central Zone 14 & U Championship - ND venue |
| 100 Freestyle | LCM | 56.97 | AAA+2.48s to AAAA | 2026-05-03 | John Traube Memorial 2026 venue |
| 200 Freestyle | LCM | 2:04.12 | AAA+4.13s to AAAA | 2025-04-04 | 2025 METS Long Course Kickoff venue |
| 400 Freestyle | LCM | 4:27.00 | AAA+11.41s to AAAA | 2026-06-26 | 88th CSP Summer Invitational venue |
| 800 Freestyle | LCM | 9:26.14 | AA+12.55s to AAA | 2026-05-01 | John Traube Memorial 2026 venue |
| 50 Backstroke | LCM | 28.91 | AAAA | 2024-08-02 | 2024 Central Zone 14 & U Championship - ND venue |
| 100 Backstroke | LCM | 1:01.58 | AAA+0.69s to AAAA | 2026-05-30 | 2026 Meet Me in St. Louis Invite venue |
| 200 Backstroke | LCM | 2:15.99 | AAA+3.80s to AAAA | 2024-08-04 | 2024 Central Zone 14 & U Championship - ND venue |
| 50 Breaststroke | LCM | 38.03 | BB+1.54s to A | 2026-06-26 | 88th CSP Summer Invitational venue |
| 50 Butterfly | LCM | 28.85 | AA+0.16s to AAA | 2023-08-05 | 2023 Central Zone 14 & U Championship - KS slow pool |
| 100 Butterfly | LCM | 1:04.21 | AA+2.52s to AAA | 2026-05-30 | 2026 Meet Me in St. Louis Invite venue |
| 200 Butterfly | LCM | 2:32.89 | BB+2.30s to A | 2025-05-04 | John Traube Memorial 2025 venue |
| 200 Individual Medley | LCM | 2:24.74 | AA+4.25s to AAA | 2025-04-04 | 2025 METS Long Course Kickoff venue |
| 400 Individual Medley | LCM | 5:11.42 | AA+9.53s to AAA | 2023-08-03 | 2023 Central Zone 14 & U Championship - KS slow pool |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 15.
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 | SCY | 1:55.23 | flying | 800 Free Relay (leg 2) | 2025-02-28 | 2025 Ozark Division I Championship |
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 15-16 · SCY
4842 points (6/6 events)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 4:39.28 | 968 |
| 200 BK SCY | 1:50.47 | 1005 |
| 200 BR SCY | 2:31.27 | 568 |
| 200 FL SCY | 2:11.52 | 629 |
| 200 IM SCY | 1:59.05 | 859 |
| 400 IM SCY | 4:18.75 | 813 |
IMR 15-16 · SCY
4331 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:42.57 | 983 |
| 100 BK SCY | 50.50 | 1011 |
| 100 BR SCY | 1:08.11 | 607 |
| 100 FL SCY | 52.75 | 871 |
| 200 IM SCY | 1:59.05 | 859 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 48.41
Front half 23.55s · back half 24.86s
200 Freestyle SCY 1:42.57
Front half 50.16s · back half 52.41s
500 Freestyle SCY 4:39.28
Front half 139.66s · back half 139.62s
1000 Freestyle SCY 9:39.41
Front half 286.33s · back half 293.08s
100 Backstroke SCY 50.50
Front half 24.71s · back half 25.79s
200 Backstroke SCY 1:50.47
Front half 54.18s · back half 56.29s
100 Breaststroke SCY 1:08.11
Front half 32.46s · back half 35.65s
200 Breaststroke SCY 2:31.27
Front half 72.04s · back half 79.23s
100 Butterfly SCY 52.75
Front half 24.87s · back half 27.88s
200 Butterfly SCY 2:11.52
Front half 62.00s · back half 69.52s
100 Individual Medley SCY 1:01.07
Front half 28.08s · back half 32.99s
200 Individual Medley SCY 1:59.05
Front half 56.23s · back half 62.82s
400 Individual Medley SCY 4:18.75
Front half 124.62s · back half 134.13s
200 Freestyle LCM 2:04.12
Front half 61.07s · back half 63.05s
400 Freestyle LCM 4:27.00
800 Freestyle LCM 9:26.14
Front half 278.45s · back half 287.69s
100 Backstroke LCM 1:01.58
Front half 30.14s · back half 31.44s
200 Backstroke LCM 2:15.99
Front half 65.59s · back half 70.40s
100 Butterfly LCM 1:04.21
Front half 30.10s · back half 34.11s
200 Butterfly LCM 2:32.89
Front half 70.59s · back half 82.30s
200 Individual Medley LCM 2:24.74
Front half 67.71s · back half 77.03s
400 Individual Medley LCM 5:11.42
Front half 147.28s · back half 164.14s
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.