swimJameson Von Rosenberg
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 22.01 | AAA+0.62s to AAAA·Sectionals ✓+0.72s to Futures | 2026-03-05 | LAC Spring Speedo Sectionals |
| 100 Freestyle | SCY | 49.31 | AA+0.32s to AAA·+1.02s to Sectionals | 2026-02-28 | 2026 ST AAAA SC Senior Champsvenue |
| 200 Freestyle | SCY | 1:49.46 | AA+2.37s to AAA·+3.67s to Sectionals | 2026-02-27 | 2026 ST AAAA SC Senior Champsvenue |
| 500 Freestyle | SCY | 6:09.65 | B+25.66s to BB·+83.56s to Sectionals | 2025-01-18 | 2025 ST AQTX B Champs Northvenue |
| 100 Backstroke | SCY | 1:04.29 | B+1.40s to BB·+9.20s to Sectionals | 2025-09-21 | 2025 ST AQTX Round Rock Unclassifiedvenue |
| 200 Backstroke | SCY | 2:42.72 | +14.23s to B·+40.43s to Sectionals | 2024-09-21 | 2024 ST AQTX Round Rock Unclassifiedvenue |
| 100 Breaststroke | SCY | 1:18.07 | +1.08s to B·+15.38s to Sectionals | 2025-10-18 | 2025 ST TXLA 11&Over Fall Kick Off Invitevenue |
| 50 Butterfly | SCY | 25.45 | AA+0.46s to AAA·+1.16s to Sectionals | 2025-12-12 | 2025 ST AAAA NS Winter Wonderlandvenue |
| 100 Butterfly | SCY | 53.96 | AA+1.07s to AAA·+1.27s to Sectionals | 2026-03-01 | 2026 ST AAAA SC Senior Champsvenue |
| 200 Individual Medley | SCY | 2:15.12 | BB+5.43s to A·+15.73s to Sectionals | 2025-12-12 | 2025 ST AAAA NS Winter Wonderlandvenue |
| 400 Individual Medley | SCY | 5:50.88 | +26.99s to B·+98.89s to Sectionals | 2024-12-15 | 2024 ST AAAA NS Winter Wonderlandvenue |
| 50 Freestyle | LCM | 24.75 | AAAA·Sectionals ✓+0.16s to Futures | 2026-06-14 | 2026 ST NIST George Block Invitationalvenue |
| 100 Freestyle | LCM | 55.52 | AAA+1.63s to AAAA·+0.23s to Sectionals | 2026-06-11 | 2026 ST NIST George Block Invitationalvenue |
| 200 Freestyle | LCM | 2:09.10 | AA+5.51s to AAA·+8.21s to Sectionals | 2026-06-13 | 2026 ST NIST George Block Invitationalvenue |
| 400 Freestyle | LCM | 4:40.39 | A+4.70s to AA·+21.30s to Sectionals | 2026-06-14 | 2026 ST NIST George Block Invitationalvenue |
| 100 Backstroke | LCM | 1:08.50 | BB+0.41s to A·+4.01s to Sectionals | 2026-07-25 | 2026 ST NEAT LC Senior Champsvenue |
| 50 Butterfly | LCM | 27.31 | AAA+0.42s to AAAA·Sectionals ✓+1.02s to Futures | 2026-06-11 | 2026 ST NIST George Block Invitationalvenue |
| 100 Butterfly | LCM | 1:02.76 | AA+2.27s to AAA·+2.27s to Sectionals | 2026-07-26 | 2026 ST NEAT LC Senior Champsvenue |
| 200 Individual Medley | LCM | 2:52.68 | B+8.79s to BB·+34.99s to Sectionals | 2025-04-27 | 2025 ST NTRO Splashing into Long Coursevenue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 16.
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.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Freestyle | SCY | 21.82 | flying | 200 Free Relay (leg 2) | 2026-02-27 | 2026 ST AAAA SC Senior Champs |
| 100 Freestyle | SCY | 50.03 | flying | 400 Medley Relay (leg 4) | 2026-03-01 | 2026 ST AAAA SC Senior Champs |
| 100 Freestyle | SCY | 49.50 | flying | 400 Free Relay (leg 2) | 2026-02-28 | 2026 ST AAAA SC Senior Champs |
| 50 Freestyle | LCM | 24.57 | flying | 200 Free Relay (leg 4) | 2026-07-24 | 2026 ST NEAT LC Senior Champs |
| 100 Freestyle | LCM | 56.38 | flying | 400 Medley Relay (leg 4) | 2026-07-25 | 2026 ST NEAT LC Senior Champs |
| 100 Freestyle | LCM | 55.03 | flying | 400 Free Relay (leg 3) | 2026-07-26 | 2026 ST NEAT LC Senior Champs |
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 15-16 · SCY
1644 points (4/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 6:09.65 | 417 |
| 200 BK SCY | 2:42.72 | 314 |
| 200 IM SCY | 2:15.12 | 587 |
| 400 IM SCY | 5:50.88 | 326 |
| 200 BR SCY | — | 0 |
| 200 FL SCY | — | 0 |
IMR 15-16 · SCY
3102 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:49.46 | 808 |
| 100 BK SCY | 1:04.29 | 490 |
| 100 BR SCY | 1:18.07 | 403 |
| 100 FL SCY | 53.96 | 814 |
| 200 IM SCY | 2:15.12 | 587 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 49.31
Front half 23.25s · back half 26.06s
500 Freestyle SCY 6:09.65
Front half 182.15s · back half 187.50s
100 Backstroke SCY 1:04.29
Front half 31.69s · back half 32.60s
200 Backstroke SCY 2:42.72
Front half 81.13s · back half 81.59s
100 Breaststroke SCY 1:18.07
Front half 36.02s · back half 42.05s
100 Butterfly SCY 53.96
Front half 25.33s · back half 28.63s
200 Individual Medley SCY 2:15.12
Front half 62.72s · back half 72.40s
400 Individual Medley SCY 5:50.88
Front half 172.89s · back half 177.99s
100 Freestyle LCM 55.52
Front half 27.07s · back half 28.45s
200 Freestyle LCM 2:09.10
Front half 61.51s · back half 67.59s
400 Freestyle LCM 4:40.39
Front half 138.65s · back half 141.74s
100 Backstroke LCM 1:08.50
Front half 33.53s · back half 34.97s
100 Butterfly LCM 1:02.76
Front half 29.52s · back half 33.24s
200 Individual Medley LCM 2:52.68
Front half 80.72s · back half 91.96s
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.