swimKatherine Rosenbaum
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 25 Freestyle | SCY | 15.50 | 2020-02-16 | LESI 8 & U Championships 2020 venue | |
| 50 Freestyle | SCY | 28.25 | AA+0.16s to AAA | 2022-03-12 | 2022 Lake Erie SC Winter JO and 8U Champs venue |
| 100 Freestyle | SCY | 1:00.56 | AAA+2.27s to AAAA | 2022-03-13 | 2022 Lake Erie SC Winter JO and 8U Champs venue |
| 200 Freestyle | SCY | 2:19.02 | A+0.13s to AA | 2022-01-23 | TYR Turn Up The HEAT Age Group and Open venue |
| 500 Freestyle | SCY | 6:11.18 | AA+14.39s to AAA | 2022-03-11 | 2022 Lake Erie SC Winter JO and 8U Champs venue |
| 50 Backstroke | SCY | 36.69 | BB+1.90s to A | 2021-11-21 | The 2021 Mark J. Braun Fall Classic venue |
| 100 Backstroke | SCY | 1:18.47 | BB+2.08s to A | 2021-12-05 | Shaker Shark Invitational venue |
| 25 Breaststroke | SCY | 28.59 | 2018-02-18 | LESI 8 & Under 2018 Championship Meet | |
| 50 Breaststroke | SCY | 36.27 | AA+0.48s to AAA | 2022-03-12 | 2022 Lake Erie SC Winter JO and 8U Champs venue |
| 100 Breaststroke | SCY | 1:18.54 | AA+0.45s to AAA | 2022-03-13 | 2022 Lake Erie SC Winter JO and 8U Champs venue |
| 25 Butterfly | SCY | 18.38 | 2020-02-16 | LESI 8 & U Championships 2020 venue | |
| 50 Butterfly | SCY | 31.23 | AA+0.64s to AAA | 2022-03-13 | 2022 Lake Erie SC Winter JO and 8U Champs venue |
| 100 Butterfly | SCY | 1:15.18 | A+2.59s to AA | 2022-01-30 | LESD Age Group and Open Meet venue |
| 100 Individual Medley | SCY | 1:11.11 | AA+1.42s to AAA | 2022-03-12 | 2022 Lake Erie SC Winter JO and 8U Champs venue |
| 200 Individual Medley | SCY | 2:31.69 | AA+0.20s to AAA | 2022-03-11 | 2022 Lake Erie SC Winter JO and 8U Champs venue |
| 50 Freestyle | LCM | 30.37 | AAAA | 2022-07-21 | 2022 Lake Erie Summer JO & SR Championships |
| 100 Freestyle | LCM | 1:07.92 | AAA+1.03s to AAAA | 2022-07-21 | 2022 Lake Erie Summer JO & SR Championships |
| 200 Freestyle | LCM | 2:29.49 | AAA+4.70s to AAAA | 2022-07-21 | 2022 Lake Erie Summer JO & SR Championships |
| 400 Freestyle | LCM | 5:19.54 | AAA+12.95s to AAAA | 2022-06-18 | Holtrey Summer Classic venue |
| 50 Backstroke | LCM | 40.77 | BB+0.68s to A | 2022-06-04 | 2022 CCS Age Group & Open LC Meet venue |
| 100 Backstroke | LCM | 1:25.48 | A+0.49s to AA | 2022-07-21 | 2022 Lake Erie Summer JO & SR Championships |
| 50 Breaststroke | LCM | 39.74 | AAA+0.45s to AAAA | 2022-07-21 | 2022 Lake Erie Summer JO & SR Championships |
| 100 Breaststroke | LCM | 1:27.73 | AAA+1.84s to AAAA | 2022-07-21 | 2022 Lake Erie Summer JO & SR Championships |
| 200 Breaststroke | LCM | 3:09.47 | AAA+3.28s to AAAA | 2022-06-11 | 2022 Solon Stars Swimfest Meet slow pool |
| 50 Butterfly | LCM | 34.43 | AA+0.14s to AAA | 2022-07-21 | 2022 Lake Erie Summer JO & SR Championships |
| 100 Butterfly | LCM | 1:18.05 | AAA+3.56s to AAAA | 2022-07-21 | 2022 Lake Erie Summer JO & SR Championships |
| 200 Individual Medley | LCM | 2:52.65 | AAA+7.16s to AAAA | 2022-06-17 | Holtrey Summer Classic venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 11.
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 | 37.15 | flat | 200 Free Relay | 2020-02-29 | Lake Erie Junior Olympic Championship Meet |
| 50 Freestyle | SCY | 30.09 | flying | 200 Free Relay (leg 4) | 2021-11-21 | The 2021 Mark J. Braun Fall Classic |
| 50 Breaststroke | SCY | 46.15 | flying | 200 Medley Relay (leg 2) | 2020-03-01 | Lake Erie Junior Olympic Championship Meet |
| 50 Freestyle | LCM | 35.64 | flying | 200 Free Relay (leg 4) | 2021-07-25 | 2021 LE Summer Junior Olympic Championships |
| 50 Freestyle | LCM | 34.65 | flying | 200 Medley Relay (leg 4) | 2021-06-19 | Holtrey Summer Classic |
| 100 Freestyle | LCM | 1:12.69 | flying | 400 Free Relay (leg 3) | 2022-05-21 | 2022 Robert F. Busbey Invitational |
| 50 Breaststroke | LCM | 57.21 | flying | 200 Medley Relay (leg 2) | 2019-07-21 | 2019 Lake Erie LC Age Group Championship Meet |
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 · LCM
3726 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 400 FR LCM | 5:19.54 | 784 |
| 100 BK LCM | 1:25.48 | 620 |
| 100 BR LCM | 1:27.73 | 810 |
| 100 FL LCM | 1:18.05 | 746 |
| 200 IM LCM | 2:52.65 | 766 |
IMR 11-12 · LCM
3731 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:29.49 | 817 |
| 50 BK LCM | 40.77 | 559 |
| 50 BR LCM | 39.74 | 832 |
| 50 FL LCM | 34.43 | 757 |
| 200 IM LCM | 2:52.65 | 766 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 1:00.56
Front half 29.35s · back half 31.21s
200 Freestyle SCY 2:19.02
Front half 67.87s · back half 71.15s
500 Freestyle SCY 6:11.18
Front half 181.94s · back half 189.24s
100 Backstroke SCY 1:18.47
Front half 37.51s · back half 40.96s
100 Breaststroke SCY 1:18.54
Front half 36.71s · back half 41.83s
100 Butterfly SCY 1:15.18
Front half 34.27s · back half 40.91s
100 Individual Medley SCY 1:11.11
Front half 32.69s · back half 38.42s
200 Individual Medley SCY 2:31.69
Front half 70.91s · back half 80.78s
400 Freestyle LCM 5:19.54
Front half 155.04s · back half 164.50s
200 Breaststroke LCM 3:09.47
Front half 92.07s · back half 97.40s
200 Individual Medley LCM 2:52.65
Front half 83.36s · back half 89.29s
Progression
Faster times are higher. One card per event, all courses & history.