swimHenry Ko
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | LCM | 25.15 | 2024-03-21 | 2024 Spring Speedo Sectionals venue | |
| 100 Freestyle | LCM | 54.31 | 2025-03-30 | 2025 Central Zone East Spring Speedo Sectiona venue | |
| 200 Freestyle | LCM | 1:58.63 | 2026-06-26 | 2026 Eric Namesnik Memorial Invite venue | |
| 400 Freestyle | LCM | 4:16.09 | 2026-06-04 | 98th Ohio Valley Championships 2026 | |
| 100 Butterfly | LCM | 56.75 | 2025-07-31 | 2025 Jrs Time Trials fast pool | |
| 200 Butterfly | LCM | 2:05.96 | 2025-07-30 | 2025 Speedo Junior National Championships fast pool | |
| 200 Individual Medley | LCM | 2:19.66 | 2024-03-24 | 2024 Spring Speedo Sectionals venue |
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 | LCM | 24.83 | flying | 200 Free Relay (leg 4) | 2025-03-27 | 2025 Central Zone East Spring Speedo Sectiona |
| 100 Freestyle | LCM | 55.18 | flying | 400 Free Relay (leg 4) | 2025-03-28 | 2025 Central Zone East Spring Speedo Sectiona |
| 50 Butterfly | LCM | 26.43 | flying | 200 Medley Relay (leg 3) | 2025-03-28 | 2025 Central Zone East Spring Speedo Sectiona |
| 100 Butterfly | LCM | 1:02.50 | flying | 400 Medley Relay (leg 3) | 2025-03-30 | 2025 Central Zone East Spring Speedo Sectiona |
Reconstructed from relay split marks. Flat = lead-off (comparable to individual times); flying starts run ~0.5–0.7s fast and are not PRs.
PR splits
100 Freestyle LCM 54.31
Front half 26.04s · back half 28.27s
200 Freestyle LCM 1:58.63
Front half 58.06s · back half 60.57s
100 Butterfly LCM 56.75 RT 0.64s
Front half 26.55s · back half 30.20s
200 Butterfly LCM 2:05.96 RT 0.65s
200 Individual Medley LCM 2:19.66
Front half 64.99s · back half 74.67s
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.