swimJack O'Brien
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 31.07 | BB+0.98s to A·+8.78s to Sectionals | 2025-12-13 | 2025 Classic City Invitational Meet venue |
| 200 Freestyle | SCY | 2:57.72 | +11.13s to B·+71.93s to Sectionals | 2025-02-15 | 2025 Peach State Championship |
| 50 Backstroke | SCY | 38.29 | B+0.20s to BB·+12.60s to Sectionals | 2025-02-15 | 2025 Peach State Championship |
| 100 Backstroke | SCY | 1:20.01 | BB+4.42s to A·+24.92s to Sectionals | 2025-12-13 | 2025 Classic City Invitational Meet venue |
| 50 Breaststroke | SCY | 43.74 | B+0.55s to BB·+14.25s to Sectionals | 2025-02-15 | 2025 Peach State Championship |
| 100 Breaststroke | SCY | 1:34.42 | B+1.83s to BB·+31.73s to Sectionals | 2025-12-13 | 2025 Classic City Invitational Meet venue |
| 50 Butterfly | SCY | 35.31 | BB+1.62s to A·+11.02s to Sectionals | 2025-12-13 | 2025 Classic City Invitational Meet venue |
| 100 Individual Medley | SCY | 1:35.87 | +7.78s to B | 2024-10-19 | 23rd Annual Chattahoochee Gold Invitational venue |
| 50 Freestyle | LCM | 33.10 | A+0.31s to AA·+7.51s to Sectionals | 2026-01-01 | Huntsville Swim Association |
| 100 Freestyle | LCM | 1:10.35 | AA+1.36s to AAA·+15.06s to Sectionals | 2026-06-28 | 2026 HSA June Invitational venue |
| 50 Backstroke | LCM | 37.60 | AA+0.91s to AAA·+7.41s to Sectionals | 2026-06-26 | 2026 HSA June Invitational venue |
| 100 Backstroke | LCM | 1:29.42 | BB+1.23s to A·+24.93s to Sectionals | 2025-06-27 | Gold Summer Invite 2025 |
| 50 Breaststroke | LCM | 42.16 | AA+1.37s to AAA·+7.97s to Sectionals | 2026-01-01 | Huntsville Swim Association |
| 100 Breaststroke | LCM | 1:32.34 | AA+2.05s to AAA·+19.95s to Sectionals | 2026-06-26 | 2026 HSA June Invitational venue |
| 50 Butterfly | LCM | 36.89 | A+0.70s to AA·+9.10s to Sectionals | 2026-06-28 | 2026 HSA June Invitational venue |
| 200 Individual Medley | LCM | 2:53.15 | AA+2.26s to AAA·+35.46s to Sectionals | 2026-06-28 | 2026 HSA June Invitational venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 11.
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.
IMX / IMR
IMX 11-12 · LCM
1769 points (3/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BK LCM | 1:29.42 | 487 |
| 100 BR LCM | 1:32.34 | 625 |
| 200 IM LCM | 2:53.15 | 657 |
| 400 FR LCM | — | 0 |
| 100 FL LCM | — | 0 |
IMR 11-12 · LCM
2488 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 50 BK LCM | 37.60 | 651 |
| 50 BR LCM | 42.16 | 627 |
| 50 FL LCM | 36.89 | 553 |
| 200 IM LCM | 2:53.15 | 657 |
| 200 FR LCM | — | 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 2:57.72 split/total mismatch
100 Backstroke SCY 1:20.01
Front half 37.91s · back half 42.10s
100 Breaststroke SCY 1:34.42
Front half 44.05s · back half 50.37s
100 Individual Medley SCY 1:35.87
Front half 40.73s · back half 55.14s
100 Breaststroke LCM 1:32.34
Front half 44.78s · back half 47.56s
200 Individual Medley LCM 2:53.15
Front half 81.13s · back half 92.02s
Progression
Faster times are higher. One card per event, all courses & history.