swimKatherine Grefski
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 27.82 | BB+0.63s to A·+3.03s to Sectionals | 2020-02-28 | 2020 MR Metro Silver South Championships |
| 100 Freestyle | SCY | 57.93 | A+1.34s to AA·+4.84s to Sectionals | 2022-01-01 | 2022 Metro South Silvers Championship |
| 200 Freestyle | SCY | 2:11.89 | BB+4.20s to A·+16.90s to Sectionals | 2019-10-19 | 2019 MR LIAC Chappy's Big Race Invitational |
| 500 Freestyle | SCY | 5:34.50 | A+4.51s to AA·+25.71s to Sectionals | 2022-01-01 | Sanction #: 221060-TT |
| 1000 Freestyle | SCY | 19:25.49 | +334.50s to B·+526.50s to Sectionals | 2022-10-29 | 2022 MR TS Halloween Distance Time Trial |
| 50 Backstroke | SCY | 35.79 | +0.60s to B·+9.50s to Futures | 2019-09-22 | 2019 MR SSC TYR September Sprint Meet |
| 100 Backstroke | SCY | 1:05.38 | BB+1.49s to A·+6.09s to Sectionals | 2022-01-14 | 2022 MR NBS Sharks Trials & Finals Meet |
| 200 Backstroke | SCY | 2:21.57 | BB+3.08s to A·+12.68s to Sectionals | 2022-01-01 | Sanction #: 221060-TT |
| 50 Breaststroke | SCY | 31.52 | AAA+0.73s to AAAA·+1.73s to Futures | 2021-10-23 | 2021 MR LIAC Chappy's Big Race Invitational |
| 100 Breaststroke | SCY | 1:16.37 | BB+2.98s to A·+8.18s to Sectionals | 2020-02-28 | 2020 MR Metro Silver South Championships |
| 200 Breaststroke | SCY | 2:42.31 | BB+2.22s to A·+12.92s to Sectionals | 2022-01-14 | 2022 MR NBS Sharks Trials & Finals Meet |
| 50 Butterfly | SCY | 2:51.85 | +137.06s to B·+146.16s to Futures | 2019-12-13 | 2019 MR HAA Eagle Invitational |
| 100 Butterfly | SCY | 1:04.52 | BB+1.03s to A·+6.03s to Sectionals | 2022-01-01 | 2022 Metro South Silvers Championship |
| 200 Butterfly | SCY | 2:32.02 | BB+10.53s to A·+19.93s to Sectionals | 2020-02-28 | 2020 MR Metro Silver South Championships |
| 100 Individual Medley | SCY | 1:07.39 | 2021-09-25 | 2021 MR SSC TYR September Sprint Meet | |
| 200 Individual Medley | SCY | 2:18.55 | A+2.06s to AA·+7.86s to Sectionals | 2019-11-23 | Metropolitan Swimming Club |
| 400 Individual Medley | SCY | 5:04.69 | BB+1.20s to A·+26.30s to Sectionals | 2020-02-28 | 2020 MR Metro Silver South Championships |
| 50 Freestyle | LCM | 33.07 | BB+2.08s to A·+4.78s to Sectionals | 2019-05-11 | 2019 mr liac spring kickoff res |
| 100 Freestyle | LCM | 1:11.24 | BB+4.15s to A·+10.55s to Sectionals | 2019-06-28 | 2019 mr liac summer fun invitational |
| 200 Freestyle | LCM | 2:30.34 | BB+5.15s to A·+19.45s to Sectionals | 2019-06-08 | 2019 mr liac summertime classic invitational res |
| 100 Backstroke | LCM | 1:17.29 | BB+2.70s to A·+9.40s to Sectionals | 2022-05-14 | 2022 MR LIAC Spring Kickoff Invitational |
| 200 Backstroke | LCM | 2:51.43 | BB+9.74s to A·+25.24s to Sectionals | 2019-06-28 | 2019 mr liac summer fun invitational |
| 100 Breaststroke | LCM | 1:30.01 | BB+5.82s to A·+12.12s to Sectionals | 2019-06-28 | 2019 mr liac summer fun invitational |
| 200 Breaststroke | LCM | 3:09.07 | BB+6.48s to A·+19.68s to Sectionals | 2022-07-22 | 2022 Metropolitan Long Course Junior Olympics |
| 100 Butterfly | LCM | 1:18.28 | BB+5.99s to A·+11.99s to Sectionals | 2022-06-25 | 2022 MR LIAC Summer Fun Invitational |
| 200 Individual Medley | LCM | 2:49.74 | BB+6.15s to A·+21.35s to Sectionals | 2019-06-08 | 2019 mr liac summertime classic invitational res |
| 400 Individual Medley | LCM | 5:54.42 | BB+7.43s to A·+33.93s to Sectionals | 2022-07-22 | 2022 Metropolitan Long Course Junior Olympics |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 17.
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 |
|---|---|---|---|---|---|---|
| 100 Freestyle | SCY | 58.03 | flying | 400 Free Relay (leg 4) | 2022-11-05 | 2022 MR OB CHSGAA Intersectional 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 17-18 · SCY
3773 points (6/6 events)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:34.50 | 702 |
| 200 BK SCY | 2:21.57 | 595 |
| 200 BR SCY | 2:42.31 | 621 |
| 200 FL SCY | 2:32.02 | 518 |
| 200 IM SCY | 2:18.55 | 694 |
| 400 IM SCY | 5:04.69 | 643 |
IMR 17-18 · SCY
3076 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:11.89 | 586 |
| 100 BK SCY | 1:05.38 | 594 |
| 100 BR SCY | 1:16.37 | 577 |
| 100 FL SCY | 1:04.52 | 625 |
| 200 IM SCY | 2:18.55 | 694 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 57.93
Front half 27.57s · back half 30.36s
100 Backstroke SCY 1:05.38
Front half 31.41s · back half 33.97s
100 Breaststroke SCY 1:16.37
Front half 35.32s · back half 41.05s
50 Butterfly SCY 2:51.85
Front half 81.38s · back half 90.47s
100 Butterfly SCY 1:04.52
Front half 29.68s · back half 34.84s
200 Butterfly SCY 2:32.02
Front half 69.65s · back half 82.37s
100 Individual Medley SCY 1:07.39
Front half 30.03s · back half 37.36s
200 Individual Medley SCY 2:18.55
Front half 63.33s · back half 75.22s
400 Individual Medley SCY 5:04.69
Front half 146.49s · back half 158.20s
100 Backstroke LCM 1:17.29
200 Breaststroke LCM 3:09.07
400 Individual Medley LCM 5:54.42
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.