swimSebastian Ritsema
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 21.52 | Sectionals ✓+1.83s to US Open | 2026-03-13 | 2026 Boys MHSAA Division 1 Championships venue |
| 100 Freestyle | SCY | 46.73 | Sectionals ✓+3.64s to US Open | 2026-03-13 | 2026 Boys MHSAA Division 1 Championships venue |
| 200 Freestyle | SCY | 1:55.92 | +8.43s to Sectionals | 2025-10-19 | 2025 OLY Fall Classic venue |
| 100 Breaststroke | SCY | 1:11.54 | +7.95s to Sectionals | 2025-10-17 | 2025 OLY Fall Classic |
| 100 Butterfly | SCY | 54.71 | +0.72s to Sectionals | 2025-03-22 | 2025 ULTRA Championship Meet fast pool |
| 200 Individual Medley | SCY | 2:14.97 | +13.98s to Sectionals | 2025-10-18 | 2025 OLY Fall Classic venue |
| 50 Freestyle | LCM | 25.68 | Sectionals ✓+2.39s to US Open | 2025-06-28 | 2025 CW Eric Namesnik Memorial Open venue |
| 100 Freestyle | LCM | 55.82 | Sectionals ✓+4.93s to US Open | 2025-03-30 | 2025 Central Zone East Spring Speedo Sectiona venue |
| 200 Freestyle | LCM | 2:14.61 | +11.12s to Sectionals | 2025-06-27 | 2025 CW Eric Namesnik Memorial Open venue |
| 100 Butterfly | LCM | 1:05.10 | +3.61s to Sectionals | 2025-06-27 | 2025 CW Eric Namesnik Memorial Open venue |
| 200 Individual Medley | LCM | 2:33.60 | +14.21s to Sectionals | 2025-05-17 | 2025 CW May Showers venue |
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.
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 | SCY | 21.68 | flying | 200 Free Relay (leg 4) | 2025-02-01 | 2025 HS Boys MISCA Meet |
| 100 Freestyle | SCY | 47.88 | flying | 400 Medley Relay (leg 4) | 2025-03-22 | 2025 ULTRA Championship Meet |
| 100 Freestyle | SCY | 47.41 | flying | 400 Free Relay (leg 4) | 2025-03-21 | 2025 ULTRA Championship Meet |
| 50 Butterfly | SCY | 23.91 | flying | 200 Medley Relay (leg 3) | 2026-01-31 | 2026 HS Boys MISCA Meet |
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 46.73
Front half 22.55s · back half 24.18s
200 Freestyle SCY 1:55.92
Front half 56.33s · back half 59.59s
100 Butterfly SCY 54.71
Front half 25.22s · back half 29.49s
200 Individual Medley SCY 2:14.97
Front half 63.99s · back half 70.98s
100 Freestyle LCM 55.82
Front half 26.65s · back half 29.17s
200 Freestyle LCM 2:14.61
Front half 63.16s · back half 71.45s
100 Butterfly LCM 1:05.10
Front half 29.77s · back half 35.33s
200 Individual Medley LCM 2:33.60
Front half 71.10s · back half 82.50s
Progression
Faster times are higher. One card per event, all courses & history.