swimMason Jacoby
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 29.39 | B+0.50s to BB·+7.00s to Sectionals | 2026-02-28 | 2026 Northern Region 13&O Championshipsfast pool |
| 100 Freestyle | SCY | 1:05.13 | B+2.44s to BB·+16.64s to Sectionals | 2026-03-01 | 2026 Northern Region 13&O Championshipsfast pool |
| 200 Freestyle | SCY | 2:40.02 | +12.23s to B·+53.73s to Sectionals | 2026-01-10 | 2026 RAYS Jeff Rouse Invitationalvenue |
| 500 Freestyle | SCY | 7:03.38 | +24.69s to B·+135.99s to Sectionals | 2026-04-18 | 2026 FXFX Pirate Pacervenue |
| 1000 Freestyle | SCY | 14:29.15 | +44.26s to B·+269.66s to Sectionals | 2026-01-17 | 2026 Duck Bowlvenue |
| 50 Backstroke | SCY | 36.68 | +1.29s to B·+12.99s to Futures | 2026-04-19 | 2026 FXFX Pirate Pacervenue |
| 100 Backstroke | SCY | 1:20.11 | +5.72s to B·+25.62s to Sectionals | 2026-02-28 | 2026 Northern Region 13&O Championshipsfast pool |
| 200 Backstroke | SCY | 3:17.84 | +35.75s to B·+79.25s to Sectionals | 2024-02-18 | 2024 North District 9-12 Championshipvenue |
| 50 Breaststroke | SCY | 40.05 | B+2.46s to BB·+13.76s to Futures | 2026-03-01 | 2026 Northern Region 13&O Championshipsfast pool |
| 100 Breaststroke | SCY | 1:38.85 | +14.56s to B·+37.36s to Sectionals | 2025-09-28 | 2025 Hanover Happyvenue |
| 50 Butterfly | SCY | 32.08 | BB+2.39s to A·+9.19s to Futures | 2026-04-18 | 2026 FXFX Pirate Pacervenue |
| 100 Butterfly | SCY | 1:15.27 | +1.48s to B·+22.08s to Sectionals | 2026-02-27 | 2026 Northern Region 13&O Championshipsfast pool |
| 100 Individual Medley | SCY | 1:16.91 | 2026-04-18 | 2026 FXFX Pirate Pacervenue | |
| 200 Individual Medley | SCY | 2:56.39 | +11.70s to B·+57.00s to Sectionals | 2026-04-19 | 2026 FXFX Pirate Pacervenue |
| 400 Individual Medley | SCY | 6:21.12 | +28.33s to B·+126.03s to Sectionals | 2026-04-19 | 2026 FXFX Pirate Pacervenue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 13.
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 Butterfly | SCY | 38.88 | flying | 200 Medley Relay (leg 3) | 2024-02-18 | 2024 North District 9-12 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.
IMX / IMR
IMX 13-14 · SCY
1116 points (4/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 7:03.38 | 319 |
| 200 BK SCY | 3:17.84 | 201 |
| 200 IM SCY | 2:56.39 | 303 |
| 400 IM SCY | 6:21.12 | 293 |
| 200 BR SCY | — | 0 |
| 200 FL SCY | — | 0 |
IMR 13-14 · SCY
1472 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:40.02 | 298 |
| 100 BK SCY | 1:20.11 | 297 |
| 100 BR SCY | 1:38.85 | 228 |
| 100 FL SCY | 1:15.27 | 346 |
| 200 IM SCY | 2:56.39 | 303 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 1:05.13
Front half 30.93s · back half 34.20s
200 Freestyle SCY 2:40.02
Front half 77.04s · back half 82.98s
500 Freestyle SCY 7:03.38
1000 Freestyle SCY 14:29.15
Front half 432.36s · back half 436.79s
100 Backstroke SCY 1:20.11
Front half 38.49s · back half 41.62s
200 Backstroke SCY 3:17.84
Front half 99.13s · back half 98.71s
100 Butterfly SCY 1:15.27
Front half 34.23s · back half 41.04s
100 Individual Medley SCY 1:16.91
Front half 34.75s · back half 42.16s
200 Individual Medley SCY 2:56.39
Front half 80.80s · back half 95.59s
400 Individual Medley SCY 6:21.12
Front half 183.58s · back half 197.54s
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.