Shelby Acosta
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 31.74 | B+0.05s to BB | 2026-02-28 | SMSC 2026 Winter BB Championships venue |
| 100 Freestyle | SCY | 1:09.77 | B+0.38s to BB | 2026-01-31 | 2026 CA AGAC Winterfest Classic venue |
| 200 Freestyle | SCY | 2:29.81 | BB+9.82s to A | 2026-02-01 | 2026 CA AGAC Winterfest Classic venue |
| 500 Freestyle | SCY | 6:32.50 | BB+17.61s to A | 2026-02-01 | 2026 CA AGAC Winterfest Classic venue |
| 1650 Freestyle | SCY | 23:04.24 | BB+92.15s to A | 2026-01-30 | 2026 CA AGAC Winterfest Classic venue |
| 50 Backstroke | SCY | 42.37 | +3.58s to B | 2025-10-11 | SMSC 47th Fall Invite venue |
| 100 Backstroke | SCY | 1:32.64 | +6.05s to B | 2025-12-07 | 2025 CA LTA Toys for Tots Meet venue |
| 50 Breaststroke | SCY | 41.55 | B+0.66s to BB | 2026-02-01 | 2026 CA AGAC Winterfest Classic venue |
| 100 Breaststroke | SCY | 1:31.56 | B+2.17s to BB | 2026-01-31 | 2026 CA AGAC Winterfest Classic venue |
| 50 Butterfly | SCY | 43.74 | +6.75s to B | 2025-10-12 | SMSC 47th Fall Invite venue |
| 100 Butterfly | SCY | 1:34.54 | +8.45s to B | 2025-12-06 | 2025 CA LTA Toys for Tots Meet venue |
| 100 Individual Medley | SCY | 1:21.92 | B+2.73s to BB | 2026-01-30 | 2026 CA AGAC Winterfest Classic venue |
| 200 Individual Medley | SCY | 2:58.19 | B+7.40s to BB | 2026-02-01 | 2026 CA AGAC Winterfest Classic venue |
| 50 Freestyle | LCM | 37.12 | B+1.13s to BB | 2026-04-18 | 2026 SLOS Spring Quadrathlon Challenge fast pool |
| 100 Freestyle | LCM | 1:18.51 | BB+5.02s to A | 2026-06-20 | 2026 SLOS Firecracker Invitational venue |
| 200 Freestyle | LCM | 2:55.60 | B+2.11s to BB | 2026-04-18 | 2026 SLOS Spring Quadrathlon Challenge fast pool |
| 400 Freestyle | LCM | 5:57.70 | BB+20.91s to A | 2026-06-20 | 2026 SLOS Firecracker Invitational venue |
| 1500 Freestyle | LCM | 23:41.02 | BB+71.83s to A | 2026-06-19 | 2026 SLOS Firecracker Invitational venue |
| 50 Backstroke | LCM | 47.68 | +2.79s to B | 2026-04-18 | 2026 SLOS Spring Quadrathlon Challenge fast pool |
| 50 Breaststroke | LCM | 48.33 | B+2.14s to BB | 2026-04-18 | 2026 SLOS Spring Quadrathlon Challenge fast pool |
| 100 Breaststroke | LCM | 1:44.22 | B+2.03s to BB | 2026-06-20 | 2026 SLOS Firecracker Invitational venue |
| 50 Butterfly | LCM | 59.74 | +17.95s to B | 2025-05-17 | SMSC 2025 MayDay LCM Arena Invitational slow pool |
| 200 Individual Medley | LCM | 3:20.05 | B+4.26s to BB | 2026-06-20 | 2026 SLOS Firecracker Invitational venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 12.
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.
IMX / IMR
IMX 11-12 · SCY
2108 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 6:32.50 | 581 |
| 100 BK SCY | 1:32.64 | 309 |
| 100 BR SCY | 1:31.56 | 476 |
| 100 FL SCY | 1:34.54 | 279 |
| 200 IM SCY | 2:58.19 | 463 |
IMR 11-12 · SCY
2088 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:29.81 | 538 |
| 50 BK SCY | 42.37 | 323 |
| 50 BR SCY | 41.55 | 500 |
| 50 FL SCY | 43.74 | 253 |
| 100 IM SCY | 1:21.92 | 474 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 1:09.77
Front half 32.10s · back half 37.67s
500 Freestyle SCY 6:32.50
Front half 190.46s · back half 202.04s
1650 Freestyle SCY 23:04.24 RT 0.85s
100 Backstroke SCY 1:32.64
Front half 44.22s · back half 48.42s
100 Breaststroke SCY 1:31.56
Front half 42.03s · back half 49.53s
100 Butterfly SCY 1:34.54
Front half 41.88s · back half 52.66s
100 Individual Medley SCY 1:21.92
Front half 38.55s · back half 43.37s
200 Individual Medley SCY 2:58.19
Front half 87.60s · back half 90.59s
100 Freestyle LCM 1:18.51
Front half 36.76s · back half 41.75s
200 Freestyle LCM 2:55.60
Front half 84.37s · back half 91.23s
400 Freestyle LCM 5:57.70
Front half 177.27s · back half 180.43s
1500 Freestyle LCM 23:41.02
Front half 693.17s · back half 727.85s
100 Breaststroke LCM 1:44.22
Front half 48.58s · back half 55.64s
200 Individual Medley LCM 3:20.05
Front half 103.53s · back half 96.52s
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.