swimLuka O'Brien
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 25 Freestyle | SCY | 16.09 | 2024-02-17 | 2024 Gulf 14 & Under Champs (DADS) slow pool | |
| 50 Freestyle | SCY | 30.67 | A+0.68s to AA | 2026-01-01 | TWST Speedo Winter Classic P/F fast pool |
| 100 Freestyle | SCY | 1:03.66 | AAA+2.57s to AAAA | 2026-01-01 | TWST Speedo Winter Classic P/F fast pool |
| 200 Freestyle | SCY | 2:38.75 | BB+7.06s to A | 2024-12-20 | 2024 Gulf Fall Champs (ESCA & AMBU) |
| 500 Freestyle | SCY | 6:23.35 | AA+13.36s to AAA | 2026-01-01 | TWST Speedo Winter Classic P/F fast pool |
| 25 Backstroke | SCY | 20.19 | 2024-02-18 | 2024 Gulf 14 & Under Champs (DADS) slow pool | |
| 50 Backstroke | SCY | 38.00 | BB+0.21s to A | 2024-10-26 | 2024 TWST Halloween Meet venue |
| 100 Backstroke | SCY | 1:17.88 | A+1.59s to AA | 2025-12-05 | 2025 Gulf Age Group Championships fast pool |
| 25 Breaststroke | SCY | 23.98 | 2024-02-17 | 2024 Gulf 14 & Under Champs (DADS) slow pool | |
| 50 Breaststroke | SCY | 46.37 | BB+4.28s to A | 2024-10-06 | 2024 Fleet Fall Kickoff Invitational venue |
| 100 Breaststroke | SCY | 1:28.95 | A+1.26s to AA | 2026-01-01 | TWST Speedo Winter Classic P/F fast pool |
| 25 Butterfly | SCY | 17.58 | 2024-02-18 | 2024 Gulf 14 & Under Champs (DADS) slow pool | |
| 50 Butterfly | SCY | 32.08 | AAA+1.29s to AAAA | 2026-01-01 | TWST Speedo Winter Classic P/F fast pool |
| 100 Butterfly | SCY | 1:12.35 | AAA+2.36s to AAAA | 2026-01-01 | TWST Speedo Winter Classic P/F fast pool |
| 100 Individual Medley | SCY | 1:23.43 | BB+3.54s to A | 2024-10-26 | 2024 TWST Halloween Meet venue |
| 200 Individual Medley | SCY | 2:42.49 | AA+4.10s to AAA | 2026-01-01 | TWST Speedo Winter Classic P/F fast pool |
| 50 Freestyle | LCM | 39.09 | BB+3.40s to A | 2024-04-21 | 2024 TWST Spring Splash LC Meet venue |
| 100 Freestyle | LCM | 1:25.81 | BB+5.62s to A | 2024-06-01 | 2024 TWST LC Invitational venue |
| 200 Freestyle | LCM | 2:38.77 | AAA+6.78s to AAAA | 2025-07-18 | 2025 Texas Age Group Championships fast pool |
| 400 Freestyle | LCM | 5:21.05 | AAAA | 2026-05-09 | 2026 FLEET Distance Challenge |
| 50 Backstroke | LCM | 41.56 | A+0.47s to AA | 2026-01-01 | TWST |
| 100 Backstroke | LCM | 1:41.94 | BB+9.65s to A | 2024-06-02 | 2024 TWST LC Invitational venue |
| 100 Breaststroke | LCM | 1:39.20 | AA+2.71s to AAA | 2026-01-01 | TWST |
| 50 Butterfly | LCM | 37.86 | AA+1.27s to AAA | 2025-07-19 | 2025 Texas Age Group Championships fast pool |
| 100 Butterfly | LCM | 1:16.06 | AAAA | 2026-01-01 | TWST |
| 200 Individual Medley | LCM | 3:07.31 | AA+6.22s to AAA | 2025-07-17 | 2025 Texas Age Group Championships fast 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 | 31.64 | flying | 200 Free Relay (leg 2) | 2025-02-02 | 2025 Fleet Mardi Gras |
| 50 Backstroke | SCY | 38.19 | flat | 200 Medley Relay | 2025-02-01 | 2025 Fleet Mardi Gras |
| 50 Freestyle | LCM | 34.82 | flying | 200 Free Relay (leg 3) | 2025-07-20 | 2025 Texas Age Group Championships |
| 100 Freestyle | LCM | 3:59.68 | flying | 400 Free Relay (leg 3) | 2025-07-18 | 2025 Texas Age Group Championships |
| 50 Butterfly | LCM | 36.79 | flying | 200 Medley Relay (leg 3) | 2025-07-19 | 2025 Texas Age Group Championships |
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 · LCM
4020 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:38.77 | 872 |
| 100 BK LCM | 1:41.94 | 483 |
| 100 BR LCM | 1:39.20 | 789 |
| 100 FL LCM | 1:16.06 | 1100 |
| 200 IM LCM | 3:07.31 | 776 |
IMR 10 & under · SCY
3425 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 100 FR SCY | 1:03.66 | 866 |
| 50 BK SCY | 38.00 | 607 |
| 50 BR SCY | 46.37 | 483 |
| 50 FL SCY | 32.08 | 884 |
| 100 IM SCY | 1:23.43 | 585 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 1:03.66 split/total mismatch
Front half 30.77s · back half 32.89s
200 Freestyle SCY 2:38.75 split/total mismatch
500 Freestyle SCY 6:23.35 split/total mismatch
100 Breaststroke SCY 1:28.95 split/total mismatch
Front half 42.49s · back half 46.46s
100 Butterfly SCY 1:12.35 split/total mismatch
Front half 35.21s · back half 37.14s
100 Individual Medley SCY 1:23.43
Front half 38.86s · back half 44.57s
200 Individual Medley SCY 2:42.49 split/total mismatch
200 Freestyle LCM 2:38.77
Front half 77.82s · back half 80.95s
200 Individual Medley LCM 3:07.31
Front half 87.36s · back half 99.95s
Progression
Faster times are higher. One card per event, all courses & history.