swimDominic Mastracchio
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 22.95 | 2022-10-01 | 2022 Fall Invitational venue | |
| 100 Freestyle | SCY | 52.71 | 2022-10-01 | 2022 Fall Invitational venue | |
| 100 Backstroke | SCY | 1:00.11 | 2020-01-18 | Syntal Capital Partners Invitational 2020 slow pool | |
| 50 Freestyle | LCM | 27.75 | 2025-08-09 | 2025 USMS Summer Nationals- OBSERVED venue | |
| 50 Backstroke | LCM | 32.69 | 2025-08-07 | 2025 USMS Summer Nationals- OBSERVED venue | |
| 50 Butterfly | LCM | 29.91 | 2025-08-10 | 2025 USMS Summer Nationals- OBSERVED 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 | 26.34 | flying | 200 Free Relay (leg 4) | 2025-08-08 | 2025 USMS Summer Nationals- OBSERVED |
| 50 Butterfly | LCM | 28.20 | flying | 200 Medley Relay (leg 3) | 2025-08-07 | 2025 USMS Summer Nationals- OBSERVED |
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 52.71
Front half 24.99s · back half 27.72s
100 Backstroke SCY 1:00.11
Front half 29.12s · back half 30.99s
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.