swimNolan O'Brien
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 30.53 | +2.44s to B | 2014-02-01 | The Junior Varsity Championship venue |
| 100 Freestyle | SCY | 1:09.55 | +8.16s to B | 2014-02-01 | The Junior Varsity Championship venue |
| 50 Freestyle | LCM | 34.82 | +2.33s to B | 2016-07-15 | Lake Erie LC Senior Championships fast pool |
| 100 Freestyle | LCM | 1:16.25 | +5.56s to B | 2016-07-17 | Lake Erie LC Senior Championships fast pool |
| 50 Backstroke | LCM | 43.07 | +5.68s to B | 2016-07-17 | Lake Erie LC Senior Championships fast pool |
| 50 Butterfly | LCM | 38.18 | +2.99s to B | 2016-07-15 | Lake Erie LC Senior Championships fast pool |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 17.
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 | 30.85 | flying | 200 Free Relay (leg 3) | 2014-02-01 | The Junior Varsity Championship |
| 100 Freestyle | SCY | 1:09.60 | flying | 400 Free Relay (leg 3) | 2014-02-01 | The Junior Varsity Championship |
Reconstructed from relay split marks. Flat = lead-off (comparable to individual times); flying starts run ~0.5–0.7s fast and are not PRs.
PR splits
100 Freestyle SCY 1:09.55
Front half 33.91s · back half 35.64s
100 Freestyle LCM 1:16.25
Front half 35.24s · back half 41.01s
Progression
Faster times are higher. One card per event, all courses & history.