swimJohn Sierzenga
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 25 Freestyle | SCY | 30.53 | 2012-11-17 | Harvest Invitational | |
| 50 Freestyle | SCY | 1:30.24 | +67.85s to Sectionals | 2011-03-04 | AD Silver Short Course Championships |
| 25 Backstroke | SCY | 34.80 | 2012-02-18 | Cabin Fever Invitationalslow pool | |
| 50 Backstroke | SCY | 1:17.73 | +54.04s to Futures | 2012-11-17 | Harvest Invitational |
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 | 1:26.74 | flat | 200 Free Relay | 2011-11-19 | Harvest Invitational |
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
IMR 10 & under · SCY
71 points (1/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 50 BK SCY | 1:17.73 | 71 |
| 100 FR SCY | — | 0 |
| 50 BR SCY | — | 0 |
| 50 FL SCY | — | 0 |
| 100 IM SCY | — | 0 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
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.