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)venue | |
| 50 Freestyle | SCY | 30.67 | A+0.68s to AA·+8.38s to Sectionals | 2026-01-01 | TWST Speedo Winter Classic P/Ffast pool |
| 100 Freestyle | SCY | 1:03.66 | AAA+2.57s to AAAA·+15.37s to Sectionals | 2026-01-01 | TWST Speedo Winter Classic P/Ffast pool |
| 200 Freestyle | SCY | 2:23.21 | AA+4.12s to AAA·+37.42s to Sectionals | 2025-12-05 | 2025 Gulf Age Group Championships |
| 500 Freestyle | SCY | 6:23.35 | AA+13.36s to AAA·+97.26s to Sectionals | 2026-01-01 | TWST Speedo Winter Classic P/Ffast pool |
| 25 Backstroke | SCY | 20.19 | 2024-02-18 | 2024 Gulf 14 & Under Champs (DADS)venue | |
| 50 Backstroke | SCY | 38.00 | BB+0.21s to A·+12.31s to Sectionals | 2024-10-26 | 2024 TWST Halloween Meetvenue |
| 100 Backstroke | SCY | 1:17.88 | A+1.59s to AA·+22.79s to Sectionals | 2025-12-05 | 2025 Gulf Age Group Championships |
| 25 Breaststroke | SCY | 23.98 | 2024-02-17 | 2024 Gulf 14 & Under Champs (DADS)venue | |
| 50 Breaststroke | SCY | 40.23 | A+0.04s to AA·+10.74s to Sectionals | 2026-02-20 | 2026 Gulf 12 & Under Championships |
| 100 Breaststroke | SCY | 1:28.95 | A+1.26s to AA·+26.26s to Sectionals | 2026-01-01 | TWST Speedo Winter Classic P/Ffast pool |
| 25 Butterfly | SCY | 17.58 | 2024-02-18 | 2024 Gulf 14 & Under Champs (DADS)venue | |
| 50 Butterfly | SCY | 31.75 | AAA+0.96s to AAAA·+7.46s to Sectionals | 2025-12-05 | 2025 Gulf Age Group Championships |
| 100 Butterfly | SCY | 1:12.33 | AAA+2.34s to AAAA·+19.64s to Sectionals | 2025-12-05 | 2025 Gulf Age Group Championships |
| 100 Individual Medley | SCY | 1:13.74 | AA+0.55s to AAA | 2025-12-05 | 2025 Gulf Age Group Championships |
| 200 Individual Medley | SCY | 2:42.49 | AA+4.10s to AAA·+43.10s to Sectionals | 2026-01-01 | TWST Speedo Winter Classic P/Ffast pool |
| 50 Freestyle | LCM | 32.57 | AAA+0.88s to AAAA·+6.98s to Sectionals | 2026-01-01 | LC Gulf Age Group Champs |
| 100 Freestyle | LCM | 1:09.93 | AAA+0.14s to AAAA·+14.64s to Sectionals | 2026-07-23 | 2026 Texas Age Group Swimming LC Champsvenue |
| 200 Freestyle | LCM | 2:32.02 | AAA+0.03s to AAAA·+31.13s to Sectionals | 2026-01-01 | LC Gulf Age Group Champs |
| 400 Freestyle | LCM | 5:20.60 | AAAA·+61.51s to Sectionals | 2026-01-01 | LC Gulf Age Group Champs |
| 50 Backstroke | LCM | 41.56 | A+0.47s to AA·+11.37s to Sectionals | 2026-04-17 | TWST Spring Splash LC Meet |
| 100 Backstroke | LCM | 1:25.19 | AA+1.10s to AAA·+20.70s to Sectionals | 2026-01-01 | LC Gulf Age Group Champs |
| 50 Breaststroke | LCM | 52.93 | BB+5.04s to A·+18.74s to Sectionals | 2025-04-12 | 2025 BTA April LC Ducky Derby |
| 100 Breaststroke | LCM | 1:34.67 | AAA+2.78s to AAAA·+22.28s to Sectionals | 2026-01-01 | LC Gulf Age Group Champs |
| 50 Butterfly | LCM | 34.18 | AAAA·+6.39s to Sectionals | 2026-07-25 | 2026 Texas Age Group Swimming LC Champsvenue |
| 100 Butterfly | LCM | 1:15.72 | AAAA·+15.23s to Sectionals | 2026-07-24 | 2026 Texas Age Group Swimming LC Champsvenue |
| 200 Individual Medley | LCM | 2:52.51 | AAA+0.02s to AAAA·+34.82s to Sectionals | 2026-07-23 | 2026 Texas Age Group Swimming LC Champsvenue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 10.
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 | 34.40 | flying | 200 Medley Relay (leg 4) | 2024-11-10 | 2024 FCST Nov Tri-Meet |
| 50 Freestyle | SCY | 31.19 | flying | 200 Free Relay (leg 3) | 2025-02-22 | MAC Hosted 2025 Gulf 12 & Under Champs |
| 50 Backstroke | SCY | 38.19 | flat | 200 Medley Relay | 2025-02-01 | 2025 Fleet Mardi Gras |
| 50 Freestyle | LCM | 32.74 | flat | 200 Free Relay | 2026-07-26 | 2026 Texas Age Group Swimming LC Champs |
| 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
4822 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:32.02 | 993 |
| 100 BK LCM | 1:25.19 | 827 |
| 100 BR LCM | 1:34.67 | 908 |
| 100 FL LCM | 1:15.72 | 1100 |
| 200 IM LCM | 2:52.51 | 994 |
IMR 10 & under · LCM
4219 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 100 FR LCM | 1:09.93 | 994 |
| 50 BK LCM | 41.56 | 705 |
| 50 BR LCM | 52.93 | 481 |
| 50 FL LCM | 34.18 | 1045 |
| 200 IM LCM | 2:52.51 | 994 |
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
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
200 Individual Medley SCY 2:42.49 split/total mismatch
100 Freestyle LCM 1:09.93
Front half 34.13s · back half 35.80s
200 Freestyle LCM 2:32.02
Front half 74.18s · back half 77.84s
400 Freestyle LCM 5:20.60
Front half 157.90s · back half 162.70s
100 Backstroke LCM 1:25.19
Front half 41.97s · back half 43.22s
100 Butterfly LCM 1:15.72
Front half 35.17s · back half 40.55s
200 Individual Medley LCM 2:52.51 RT 0.52s
Front half 83.50s · back half 89.01s
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.
Swim history
Every recorded swim, newest first
| Date | Event | Course | Time | Age | Round | Meet |
|---|
Individual swims with a recorded date and time — including disqualifications — plus reconstructed relay legs (marked). Assembled in the browser from this page’s data.
Progression
Faster times are higher. One card per event, all courses & history.