swimPatrick O'Brien
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 23.57 | A+0.48s to AA·+1.28s to Sectionals | 2026-04-01 | 2026 YMCA SCY Time Trials venue |
| 100 Freestyle | SCY | 48.40 | AA+0.11s to AAA·+0.11s to Sectionals | 2024-12-13 | 2024 MR CIY FLY Holiday Invitational |
| 200 Freestyle | SCY | 2:05.50 | BB+9.51s to A·+19.71s to Sectionals | 2025-10-12 | 2025 MR TVSC Ann Wycoff Memorial Swim Meet venue |
| 100 Backstroke | SCY | 52.85 | AA+0.36s to AAA·Sectionals ✓+1.36s to Futures | 2026-04-18 | 2026 MR AP ASCSC Suffolk County Championships |
| 50 Butterfly | SCY | 31.94 | +0.75s to B·+7.65s to Sectionals | 2020-11-14 | 2020 MR EHY MacNiven Memorial Meet |
| 100 Butterfly | SCY | 53.97 | AA+1.98s to AAA·+1.28s to Sectionals | 2026-02-13 | 2026 MR TYR Senior Mets Winter Championship venue |
| 200 Individual Medley | SCY | 4:08.52 | +98.93s to B·+129.13s to Sectionals | 2025-12-12 | 2025 MR CIY FLY Holiday Invitational |
| 50 Freestyle | LCM | 26.87 | A+0.18s to AA·+1.28s to Sectionals | 2025-08-01 | 2025 ISCA Summer Senior Blast fast pool |
| 100 Freestyle | LCM | 53.40 | AAA+0.41s to AAAA·Futures ✓+0.81s to Winter JNs | 2025-07-29 | 2025 ISCA Summer Senior Blast |
| 50 Backstroke | LCM | 31.89 | A+1.20s to AA·+1.70s to Sectionals | 2025-07-31 | 2025 ISCA Summer Senior Blast fast pool |
| 100 Backstroke | LCM | 2:25.36 | +66.67s to B·+80.87s to Sectionals | 2025-07-29 | 2025 ISCA Summer Senior Blast |
| 50 Breaststroke | LCM | 39.16 | B+1.17s to BB·+4.97s to Sectionals | 2025-08-02 | 2025 ISCA Summer Senior Blast fast pool |
| 50 Butterfly | LCM | 28.37 | AA+0.68s to AAA·+0.58s to Sectionals | 2026-05-30 | 2026 MR SSC A-May-Zing Races Invitational |
| 100 Butterfly | LCM | 1:03.35 | A+0.96s to AA·+2.86s to Sectionals | 2026-05-31 | 2026 MR SSC A-May-Zing Races Invitational venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 17.
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 |
|---|---|---|---|---|---|---|
| 100 Freestyle | SCY | 51.85 | flying | 400 Free Relay (leg 3) | 2026-02-15 | 2026 MR TYR Senior Mets Winter Championship |
| 50 Butterfly | SCY | 24.06 | flying | 200 Medley Relay (leg 3) | 2026-02-13 | 2026 MR TYR Senior Mets Winter Championship |
| 100 Butterfly | SCY | 53.93 | flying | 400 Medley Relay (leg 3) | 2026-01-17 | Winterfest 2026 |
| 50 Freestyle | LCM | 26.17 | flying | 200 Free Relay (leg 3) | 2025-07-29 | 2025 ISCA Summer Senior Blast |
| 100 Freestyle | LCM | 59.57 | flying | 400 Free Relay (leg 2) | 2025-08-02 | 2025 ISCA Summer Senior Blast |
| 50 Butterfly | LCM | 27.97 | flying | 200 Medley Relay (leg 3) | 2025-07-29 | 2025 ISCA Summer Senior Blast |
| 100 Butterfly | LCM | 1:03.75 | flying | 400 Medley Relay (leg 3) | 2025-07-30 | 2025 ISCA Summer Senior Blast |
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 17-18 · SCY
88 points (1/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 IM SCY | 4:08.52 | 88 |
| 500 FR SCY | — | 0 |
| 200 BK SCY | — | 0 |
| 200 BR SCY | — | 0 |
| 200 FL SCY | — | 0 |
| 400 IM SCY | — | 0 |
IMR 17-18 · SCY
2139 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:05.50 | 508 |
| 100 BK SCY | 52.85 | 791 |
| 100 FL SCY | 53.97 | 752 |
| 200 IM SCY | 4:08.52 | 88 |
| 100 BR SCY | — | 0 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
200 Freestyle SCY 2:05.50
Front half 61.16s · back half 64.34s
100 Butterfly SCY 53.97
Front half 25.05s · back half 28.92s
50 Butterfly LCM 28.37 split/total mismatch
Front half 44.97s · back half -16.60s
100 Butterfly LCM 1:03.35
Front half 29.17s · back half 34.18s
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.