swimDavid Mastin
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 25 Freestyle | SCY | 19.09 | 2025-01-12 | SLA Arctic Blast 2025 slow pool | |
| 50 Freestyle | SCY | 34.90 | B+0.11s to BB | 2026-05-23 | 2026 ISCA National Diversity Swim Champ venue |
| 100 Freestyle | SCY | 1:29.20 | +0.71s to B | 2026-02-15 | SAC Winter Classic venue |
| 200 Freestyle | SCY | 3:16.43 | +6.84s to B | 2026-05-24 | 2026 ISCA National Diversity Swim Champ venue |
| 25 Backstroke | SCY | 22.58 | 2025-01-12 | SLA Arctic Blast 2025 slow pool | |
| 50 Backstroke | SCY | 42.35 | BB+4.56s to A | 2026-05-22 | 2026 ISCA National Diversity Swim Champ venue |
| 100 Backstroke | SCY | 1:37.92 | B+7.43s to BB | 2026-05-23 | 2026 ISCA National Diversity Swim Champ venue |
| 25 Breaststroke | SCY | 23.42 | 2024-10-26 | Halloween Town USA 2024 venue | |
| 50 Breaststroke | SCY | 44.77 | BB+2.68s to A | 2026-05-22 | 2026 ISCA National Diversity Swim Champ venue |
| 100 Breaststroke | SCY | 1:42.39 | BB+10.70s to A | 2026-05-24 | 2026 ISCA National Diversity Swim Champ venue |
| 25 Butterfly | SCY | 23.72 | 2024-11-10 | 24th Annual Tyr Red, White, and Blue Classic venue | |
| 50 Butterfly | SCY | 39.93 | BB+3.84s to A | 2026-05-22 | 2026 ISCA National Diversity Swim Champ venue |
| 100 Butterfly | SCY | 1:38.34 | BB+13.75s to A | 2026-03-08 | 2026 Lake Erie Regional Meet venue |
| 100 Individual Medley | SCY | 1:28.19 | BB+8.30s to A | 2026-05-23 | 2026 ISCA National Diversity Swim Champ venue |
| 200 Individual Medley | SCY | 3:20.01 | B+4.02s to BB | 2026-05-24 | 2026 ISCA National Diversity Swim Champ venue |
| 100 Freestyle | SCM | 1:38.12 | +0.43s to B | 2026-05-02 | May the 2nd and 3rd Intergalactic Meet 2026 slow pool |
| 50 Backstroke | SCM | 50.11 | B+2.42s to BB | 2026-05-02 | May the 2nd and 3rd Intergalactic Meet 2026 slow pool |
| 100 Breaststroke | SCM | 2:04.75 | B+10.26s to BB | 2025-05-03 | May the Fourth Intergalactic Meet 2025 slow pool |
| 50 Butterfly | SCM | 50.93 | B+5.34s to BB | 2026-05-02 | May the 2nd and 3rd Intergalactic Meet 2026 slow pool |
| 200 Individual Medley | SCM | 4:13.98 | +12.39s to B | 2025-05-03 | May the Fourth Intergalactic Meet 2025 slow pool |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 10.
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 | 38.50 | flat | 200 Free Relay | 2026-03-07 | 2026 Lake Erie Regional Meet |
| 50 Freestyle | SCY | 38.21 | flying | 200 Free Relay (leg 3) | 2025-02-22 | 2025 Lake Ontario Regional Meet |
| 50 Breaststroke | SCY | 45.27 | flying | 200 Medley Relay (leg 2) | 2026-03-08 | 2026 Lake Erie Regional 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.
IMX / IMR
IMX 10 & under · SCY
1898 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 3:16.43 | 308 |
| 100 BK SCY | 1:37.92 | 349 |
| 100 BR SCY | 1:42.39 | 455 |
| 100 FL SCY | 1:38.34 | 357 |
| 200 IM SCY | 3:20.01 | 429 |
IMR 10 & under · SCY
2243 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 100 FR SCY | 1:29.20 | 314 |
| 50 BK SCY | 42.35 | 439 |
| 50 BR SCY | 44.77 | 537 |
| 50 FL SCY | 39.93 | 458 |
| 100 IM SCY | 1:28.19 | 495 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
200 Freestyle SCY 3:16.43
Front half 94.27s · back half 102.16s
100 Backstroke SCY 1:37.92
Front half 46.90s · back half 51.02s
100 Breaststroke SCY 1:42.39
Front half 47.72s · back half 54.67s
100 Butterfly SCY 1:38.34
Front half 46.18s · back half 52.16s
100 Individual Medley SCY 1:28.19
Front half 40.94s · back half 47.25s
200 Individual Medley SCY 3:20.01
Front half 97.86s · back half 102.15s
100 Freestyle SCM 1:38.12
Front half 44.64s · back half 53.48s
100 Breaststroke SCM 2:04.75
Front half 61.35s · back half 63.40s
200 Individual Medley SCM 4:13.98
Progression
Faster times are higher. One card per event, all courses & history.