swimGus Koh
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 21.44 | Sectionals ✓+1.05s to Futures | 2024-11-22 | 2024 Speedo Grand Chalengevenue |
| 100 Freestyle | SCY | 47.46 | Sectionals ✓+3.07s to Futures | 2024-11-23 | 2024 Speedo Grand Chalengevenue |
| 50 Backstroke | SCY | 23.09 | Sectionals ✓+0.60s to Futures | 2024-11-22 | 2024 Speedo Grand Chalengevenue |
| 100 Backstroke | SCY | 50.63 | Sectionals ✓+2.04s to Futures | 2024-11-01 | 2024 MAC A3 Performance November Invitational |
| 200 Backstroke | SCY | 1:49.26 | Sectionals ✓+2.77s to Futures | 2024-11-01 | 2024 MAC A3 Performance November Invitational |
| 100 Breaststroke | SCY | 58.28 | Sectionals ✓+3.29s to Futures | 2024-11-01 | 2024 MAC A3 Performance November Invitational |
| 100 Butterfly | SCY | 50.39 | Sectionals ✓+2.20s to Futures | 2024-11-01 | 2024 MAC A3 Performance November Invitational |
| 50 Freestyle | LCM | 24.29 | Sectionals ✓+0.50s to Futures | 2026-07-25 | 2026 LC Illinois Senior Championshipsvenue |
| 100 Freestyle | LCM | 53.18 | Sectionals ✓+1.19s to Futures | 2025-07-24 | 2025 TYR FUTURES MADISONvenue |
| 400 Freestyle | LCM | 4:25.62 | +3.43s to Sectionals | 2024-05-17 | 2024 MAC LC Midwest Invitationalvenue |
| 50 Backstroke | LCM | 27.41 | Sectionals ✓+0.72s to Futures | 2025-07-25 | 2025 TYR FUTURES MADISONvenue |
| 100 Backstroke | LCM | 57.85 | Futures ✓+0.96s to US Open | 2025-07-24 | 2025 TYR FUTURES MADISONvenue |
| 200 Backstroke | LCM | 2:06.25 | Futures ✓+1.66s to US Open | 2025-07-26 | 2025 TYR FUTURES MADISONvenue |
| 50 Breaststroke | LCM | 29.33 | Futures ✓+0.14s to US Open | 2025-07-26 | 2025 TYR FUTURES MADISONvenue |
| 100 Butterfly | LCM | 59.24 | Sectionals ✓+3.35s to Futures | 2026-07-24 | 2026 LC Illinois Senior Championshipsvenue |
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 | 20.71 | flying | 200 Free Relay (leg 4) | 2024-11-22 | 2024 Speedo Grand Chalenge |
| 50 Backstroke | SCY | 23.37 | flat | 200 Medley Relay | 2024-11-23 | 2024 Speedo Grand Chalenge |
| 50 Freestyle | LCM | 23.27 | flying | 200 Free Relay (leg 2) | 2025-07-23 | 2025 TYR FUTURES MADISON |
| 100 Freestyle | LCM | 53.25 | flying | 400 Medley Relay (leg 4) | 2026-07-25 | 2026 LC Illinois Senior Championships |
| 200 Freestyle | LCM | 1:56.43 | flying | 800 Free Relay (leg 4) | 2025-07-24 | 2025 TYR FUTURES MADISON |
| 50 Backstroke | LCM | 27.17 | flat | 200 Medley Relay | 2025-07-23 | 2025 TYR FUTURES MADISON |
| 100 Backstroke | LCM | 58.36 | flat | 400 Medley Relay | 2025-07-26 | 2025 TYR FUTURES MADISON |
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 SCY 47.46 RT 0.74s
Front half 22.84s · back half 24.62s
100 Backstroke SCY 50.63
Front half 24.46s · back half 26.17s
200 Backstroke SCY 1:49.26
Front half 53.72s · back half 55.54s
100 Breaststroke SCY 58.28
Front half 27.14s · back half 31.14s
100 Butterfly SCY 50.39
Front half 23.33s · back half 27.06s
100 Freestyle LCM 53.18
Front half 25.93s · back half 27.25s
400 Freestyle LCM 4:25.62
Front half 130.69s · back half 134.93s
100 Backstroke LCM 57.85
Front half 28.09s · back half 29.76s
200 Backstroke LCM 2:06.25
Front half 61.42s · back half 64.83s
100 Butterfly LCM 59.24 RT 0.71s
Front half 26.28s · back half 32.96s
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.