swimHazel Jefferson
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 25 Freestyle | SCY | 1:04.60 | 2025-02-08 | 2025 Aquarius | |
| 50 Freestyle | SCY | 27.25 | AA+0.26s to AAA·+2.36s to Sectionals | 2026-10-17 | 2026 T2 Spooktacularvenue |
| 100 Freestyle | SCY | 57.85 | AAA+1.76s to AAAA·+3.76s to Sectionals | 2026-10-16 | 2026 T2 Spooktacularvenue |
| 200 Freestyle | SCY | 2:07.51 | AAA+5.02s to AAAA·+10.82s to Sectionals | 2026-10-17 | 2026 T2 Spooktacularvenue |
| 500 Freestyle | SCY | 5:51.00 | AA+7.41s to AAA·+41.11s to Sectionals | 2026-09-18 | 2026 Sharks IMX Challengevenue |
| 50 Backstroke | SCY | 31.73 | AA+1.24s to AAA·+3.14s to Sectionals | 2026-10-16 | 2026 T2 Spooktacularvenue |
| 100 Backstroke | SCY | 1:06.62 | AA+0.43s to AAA·+5.83s to Sectionals | 2026-09-19 | 2026 Sharks IMX Challengevenue |
| 200 Backstroke | SCY | 2:37.33 | BB+2.94s to A·+24.04s to Sectionals | 2025-02-21 | 2025 GA Age Group State Championship |
| 50 Breaststroke | SCY | 43.35 | B+2.46s to BB·+9.76s to Sectionals | 2024-10-13 | 2024 Swim Atlanta October Invitevenue |
| 50 Butterfly | SCY | 28.74 | AAA+0.95s to AAAA·+1.35s to Sectionals | 2026-10-16 | 2026 T2 Spooktacularvenue |
| 100 Butterfly | SCY | 1:04.34 | AAA+2.35s to AAAA·+5.25s to Sectionals | 2026-09-19 | 2026 Sharks IMX Challengevenue |
| 200 Butterfly | SCY | 2:21.12 | AAA+3.53s to AAAA·+8.93s to Sectionals | 2026-01-17 | GSA January Jump Start 2026venue |
| 100 Individual Medley | SCY | 1:14.38 | BB+1.29s to A | 2025-09-20 | 2025 Pentathlon |
| 200 Individual Medley | SCY | 2:37.77 | BB+0.08s to A·+25.18s to Sectionals | 2025-09-20 | 2025 Pentathlon |
| 50 Freestyle | LCM | 31.72 | AA+1.03s to AAA·+3.33s to Sectionals | 2025-07-11 | 2025 GCAT's Last Chance Long Course Meet |
| 100 Freestyle | LCM | 1:07.51 | AA+0.22s to AAA·+6.22s to Sectionals | 2026-07-09 | 2026 FL Summer Age Group Championshipsvenue |
| 200 Freestyle | LCM | 2:26.18 | AAA+6.09s to AAAA·+14.09s to Sectionals | 2026-07-10 | 2026 FL Summer Age Group Championshipsvenue |
| 400 Freestyle | LCM | 5:20.70 | AA+12.01s to AAA·+41.91s to Sectionals | 2025-06-21 | 2025 Planet Swim Summer Championshipsvenue |
| 50 Backstroke | LCM | 43.00 | B+1.31s to BB·+10.11s to Sectionals | 2024-07-21 | 2024 GA AG LC Championship July 18-21 2024slow pool |
| 100 Backstroke | LCM | 1:19.25 | AA+2.36s to AAA·+9.46s to Sectionals | 2026-07-12 | 2026 FL Summer Age Group Championshipsvenue |
| 200 Backstroke | LCM | 2:54.10 | A+3.11s to AA·+22.11s to Sectionals | 2025-07-11 | 2025 GCAT's Last Chance Long Course Meet |
| 50 Butterfly | LCM | 32.64 | AAA+1.25s to AAAA·+1.35s to Sectionals | 2026-07-10 | 2026 FL Summer Age Group Championshipsvenue |
| 100 Butterfly | LCM | 1:12.22 | AAA+1.33s to AAAA·+4.83s to Sectionals | 2026-07-12 | 2026 FL Summer Age Group Championshipsvenue |
| 200 Butterfly | LCM | 2:49.37 | AA+3.48s to AAA·+18.08s to Sectionals | 2025-06-22 | 2025 Planet Swim Summer Championshipsvenue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 12.
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 Freestyle | SCY | 27.03 | flying | 200 Free Relay (leg 4) | 2026-01-18 | GSA January Jump Start 2026 |
| 50 Butterfly | SCY | 29.37 | flying | 200 Medley Relay (leg 3) | 2026-01-17 | GSA January Jump Start 2026 |
| 50 Butterfly | LCM | 35.95 | flying | 200 Medley Relay (leg 3) | 2024-07-21 | 2024 GA AG LC Championship July 18-21 2024 |
| 100 Butterfly | LCM | 1:29.03 | flying | 400 Medley Relay (leg 3) | 2025-06-20 | 2025 Planet Swim Summer 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
3198 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:51.00 | 813 |
| 100 BK SCY | 1:06.62 | 833 |
| 100 FL SCY | 1:04.34 | 885 |
| 200 IM SCY | 2:37.77 | 667 |
| 100 BR SCY | — | 0 |
IMR 11-12 · SCY
3610 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:07.51 | 873 |
| 50 BK SCY | 31.73 | 770 |
| 50 BR SCY | 43.35 | 440 |
| 50 FL SCY | 28.74 | 894 |
| 100 IM SCY | 1:14.38 | 633 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 57.85
Front half 27.65s · back half 30.20s
200 Freestyle SCY 2:07.51
Front half 63.20s · back half 64.31s
500 Freestyle SCY 5:51.00
Front half 176.74s · back half 174.26s
100 Backstroke SCY 1:06.62
Front half 32.96s · back half 33.66s
100 Butterfly SCY 1:04.34
Front half 30.61s · back half 33.73s
200 Butterfly SCY 2:21.12
Front half 66.92s · back half 74.20s
100 Freestyle LCM 1:07.51
Front half 32.51s · back half 35.00s
200 Freestyle LCM 2:26.18 RT 0.72s
Front half 71.83s · back half 74.35s
400 Freestyle LCM 5:20.70
Front half 161.91s · back half 158.79s
100 Backstroke LCM 1:19.25 RT 1.01s
Front half 39.07s · back half 40.18s
100 Butterfly LCM 1:12.22 RT 0.76s· 510.0 min after 100 Butterfly
Front half 33.39s · back half 38.83s
200 Butterfly LCM 2:49.37
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.