swimJosh Rosenzweig
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 25 Freestyle | SCY | 19.05 | 2021-12-12 | 2021 NBAC Holiday 8 & U Meet venue | |
| 50 Freestyle | SCY | 31.35 | B+0.86s to BB | 2024-12-14 | 2024 NBAC 50th Annual Christmas Invitational venue |
| 100 Freestyle | SCY | 1:07.05 | B+0.66s to BB | 2025-03-15 | 2025 MD LSC / NBAC JR Champs - Site 1 fast pool |
| 200 Freestyle | SCY | 2:28.16 | B+3.27s to BB | 2024-12-15 | 2024 NBAC 50th Annual Christmas Invitational venue |
| 500 Freestyle | SCY | 6:30.04 | B+0.05s to BB | 2024-12-12 | 2024 NBAC 50th Annual Christmas Invitational venue |
| 25 Backstroke | SCY | 24.28 | 2021-12-12 | 2021 NBAC Holiday 8 & U Meet venue | |
| 50 Backstroke | SCY | 37.14 | B+1.55s to BB | 2024-12-15 | 2024 NBAC 50th Annual Christmas Invitational venue |
| 100 Backstroke | SCY | 1:15.95 | B+0.26s to BB | 2025-03-16 | 2025 MD LSC / NBAC JR Champs - Site 1 fast pool |
| 200 Backstroke | SCY | 2:42.18 | B+1.69s to BB | 2024-12-13 | 2024 NBAC 50th Annual Christmas Invitational venue |
| 50 Breaststroke | SCY | 44.73 | +1.24s to B | 2025-02-09 | 2025 NBAC /GTAC Last Chance - 8 & U Meet venue |
| 100 Breaststroke | SCY | 1:33.39 | +0.80s to B | 2024-12-14 | 2024 NBAC 50th Annual Christmas Invitational venue |
| 200 Breaststroke | SCY | 3:23.31 | +6.82s to B | 2024-12-12 | 2024 NBAC 50th Annual Christmas Invitational |
| 50 Butterfly | SCY | 39.48 | +2.39s to B | 2024-10-07 | Bill Schmidt Invite |
| 100 Butterfly | SCY | 1:34.09 | +11.20s to B | 2024-10-20 | 2024 NBAC Fall Fastival Meet fast pool |
| 100 Individual Medley | SCY | 1:21.21 | B+5.32s to BB | 2025-01-04 | 2025 NBAC New Year's Kick-Off Meet venue |
| 200 Individual Medley | SCY | 2:51.92 | B+6.13s to BB | 2024-12-13 | 2024 NBAC 50th Annual Christmas Invitational venue |
| 50 Freestyle | LCM | 34.81 | B+0.02s to BB | 2025-04-12 | 2025 EST Spring Into Long Course venue |
| 100 Freestyle | LCM | 1:16.61 | B+0.42s to BB | 2025-07-27 | 2025 Maryland Long Course Junior Championship venue |
| 200 Freestyle | LCM | 2:44.17 | BB+10.58s to A | 2025-04-12 | 2025 EST Spring Into Long Course venue |
| 400 Freestyle | LCM | 6:01.34 | B+7.35s to BB | 2025-01-01 | 2025 EST Spring Into Long Course |
| 50 Backstroke | LCM | 41.64 | B+0.45s to BB | 2025-04-12 | 2025 EST Spring Into Long Course venue |
| 100 Backstroke | LCM | 1:32.50 | B+2.91s to BB | 2024-07-07 | 2024 NBAC Mid Summer Classic venue |
| 200 Backstroke | LCM | 3:11.83 | B+3.34s to BB | 2024-07-27 | 2024 Maryland Long Course Junior Championship venue |
| 50 Breaststroke | LCM | 48.63 | B+2.74s to BB | 2025-05-18 | 2025 NBAC Spring LC Invitational Meet venue |
| 100 Breaststroke | LCM | 1:57.60 | +9.81s to B | 2024-06-10 | Chargers Long Course Closed Invitational |
| 50 Butterfly | LCM | 42.34 | +0.35s to B | 2025-07-12 | 2025 NBAC Mid Summer Classic venue |
| 100 Butterfly | LCM | 1:43.10 | +8.01s to B | 2025-07-11 | 2025 NBAC Mid Summer Classic venue |
| 200 Individual Medley | LCM | 3:09.92 | B+0.33s to BB | 2025-07-27 | 2025 Maryland Long Course Junior Championship venue |
| 400 Individual Medley | LCM | 7:18.21 | +0.32s to B | 2025-05-17 | 2025 NBAC Spring LC Invitational Meet venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 12.
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 | 33.36 | flat | 200 Free Relay | 2024-03-16 | 2024 NBAC / MD LSC 11 & Over B Championships |
| 50 Freestyle | SCY | 31.15 | flying | 200 Free Relay (leg 2) | 2025-03-15 | 2025 MD LSC / NBAC JR Champs - Site 1 |
| 50 Freestyle | SCY | 32.42 | flying | 200 Medley Relay (leg 4) | 2024-03-17 | 2024 NBAC / MD LSC 11 & Over B Championships |
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 11-12 · SCY
2088 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 6:30.04 | 526 |
| 100 BK SCY | 1:15.95 | 480 |
| 100 BR SCY | 1:33.39 | 382 |
| 100 FL SCY | 1:34.09 | 247 |
| 200 IM SCY | 2:51.92 | 453 |
IMR 11-12 · LCM
2299 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:44.17 | 548 |
| 50 BK LCM | 41.64 | 479 |
| 50 BR LCM | 48.63 | 408 |
| 50 FL LCM | 42.34 | 366 |
| 200 IM LCM | 3:09.92 | 498 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 1:07.05
Front half 31.88s · back half 35.17s
200 Freestyle SCY 2:28.16
Front half 72.80s · back half 75.36s
500 Freestyle SCY 6:30.04
Front half 193.50s · back half 196.54s
100 Backstroke SCY 1:15.95
Front half 36.48s · back half 39.47s
200 Backstroke SCY 2:42.18
Front half 78.98s · back half 83.20s
100 Breaststroke SCY 1:33.39
Front half 44.11s · back half 49.28s
100 Butterfly SCY 1:34.09
Front half 43.71s · back half 50.38s
100 Individual Medley SCY 1:21.21
Front half 38.51s · back half 42.70s
200 Individual Medley SCY 2:51.92
Front half 84.62s · back half 87.30s
100 Freestyle LCM 1:16.61
Front half 35.77s · back half 40.84s
200 Freestyle LCM 2:44.17
Front half 80.59s · back half 83.58s
100 Backstroke LCM 1:32.50
Front half 44.90s · back half 47.60s
200 Backstroke LCM 3:11.83
Front half 94.97s · back half 96.86s
100 Breaststroke LCM 1:57.60 split/total mismatch
Front half 56.85s · back half 60.75s
100 Butterfly LCM 1:43.10
Front half 47.63s · back half 55.47s
200 Individual Medley LCM 3:09.92
Front half 92.00s · back half 97.92s
400 Individual Medley LCM 7:18.21
Front half 225.31s · back half 212.90s
Progression
Faster times are higher. One card per event, all courses & history.