swimJoslin Halsey
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 23.99 | AAAA | 2024-12-22 | 2024 NE CS SCY New England Senior Meet venue |
| 100 Freestyle | SCY | 51.95 | AAAA | 2024-12-21 | 2024 NE CS SCY New England Senior Meet venue |
| 200 Freestyle | SCY | 1:52.54 | AAA+0.45s to AAAA | 2024-12-20 | 2024 NE CS SCY New England Senior Meet venue |
| 500 Freestyle | SCY | 5:06.84 | AAA+4.85s to AAAA | 2024-12-21 | 2024 NE CS SCY New England Senior Meet venue |
| 50 Breaststroke | SCY | 34.30 | A+0.41s to AA | 2023-11-18 | 2023 ISCA Fall Classic Championship venue |
| 100 Breaststroke | SCY | 1:13.21 | A+2.12s to AA | 2024-10-19 | 2024 NE CRIM OCTOBER TEAM SPECIALTY W/ DIST venue |
| 50 Butterfly | SCY | 26.41 | AAA+0.12s to AAAA | 2024-11-16 | 2024 NE SAC Turkey Splash venue |
| 100 Butterfly | SCY | 55.61 | AAAA | 2024-11-24 | 2024 NE NSSC Prelims/Finals at PA venue |
| 200 Butterfly | SCY | 2:03.48 | AAAA | 2024-11-23 | 2024 NE NSSC Prelims/Finals at PA venue |
| 100 Individual Medley | SCY | 1:03.51 | 2024-09-21 | 2024 NE NSSC September Sprints MIT venue | |
| 200 Individual Medley | SCY | 2:09.93 | AAA+4.44s to AAAA | 2024-03-24 | 2024 EZ North Region Speedo Sectional Champs venue |
| 400 Individual Medley | SCY | 4:35.93 | AAA+7.24s to AAAA | 2024-11-15 | 2024 NE SAC Turkey Splash venue |
| 50 Freestyle | LCM | 27.59 | AAA+0.30s to AAAA | 2024-07-11 | 2024 NE BGSC LCM Senior Championships venue |
| 100 Freestyle | LCM | 59.08 | AAA+0.19s to AAAA | 2024-07-12 | 2024 NE BGSC LCM Senior Championships venue |
| 200 Freestyle | LCM | 2:08.44 | AAA+1.35s to AAAA | 2024-07-14 | 2024 NE BGSC LCM Senior Championships venue |
| 400 Freestyle | LCM | 4:33.90 | AAA+4.61s to AAAA | 2024-07-13 | 2024 NE BGSC LCM Senior Championships venue |
| 50 Backstroke | LCM | 1:00.64 | +19.35s to B | 2025-06-20 | CAC Destination Athlete Northeas venue |
| 100 Backstroke | LCM | 1:12.98 | A+1.09s to AA | 2024-05-11 | 2024 NE BGSC May 10-12 Spring Fling venue |
| 200 Backstroke | LCM | 2:34.67 | A+0.38s to AA | 2025-06-20 | CAC Destination Athlete Northeas venue |
| 100 Breaststroke | LCM | 1:24.81 | A+3.32s to AA | 2024-06-23 | 2024 NE BGSC June Summer Solstice venue |
| 50 Butterfly | LCM | 28.96 | AAAA | 2025-07-10 | 2025 NE CS LCM Senior Championships venue |
| 100 Butterfly | LCM | 1:03.31 | AAA+0.02s to AAAA | 2025-01-01 | 2025 NE Swimming LC Senior Championships - Brown University, S#: NE25-0710CS venue |
| 200 Butterfly | LCM | 2:21.26 | AAA+0.17s to AAAA | 2024-07-13 | 2024 NE BGSC LCM Senior Championships venue |
| 200 Individual Medley | LCM | 2:27.57 | AAA+3.78s to AAAA | 2024-06-22 | 2024 NE BGSC June Summer Solstice venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 16.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Freestyle | SCY | 23.61 | flying | 200 Medley Relay (leg 4) | 2024-12-21 | 2024 NE CS SCY New England Senior Meet |
| 50 Freestyle | SCY | 23.61 | flying | 200 Free Relay (leg 4) | 2024-12-20 | 2024 NE CS SCY New England Senior Meet |
| 200 Freestyle | SCY | 1:52.52 | flying | 800 Free Relay (leg 2) | 2024-12-19 | 2024 NE CS SCY New England Senior Meet |
| 50 Butterfly | SCY | 25.64 | flying | 200 Medley Relay (leg 3) | 2025-02-27 | 2025 NE CRIM 15-18 AG Championships |
| 100 Butterfly | SCY | 56.77 | flying | 400 Medley Relay (leg 3) | 2024-12-22 | 2024 NE CS SCY New England Senior Meet |
| 100 Freestyle | LCM | 59.65 | flying | 400 Medley Relay (leg 4) | 2025-07-11 | 2025 NE CS LCM Senior Championships |
| 100 Freestyle | LCM | 1:00.06 | flying | 400 Free Relay (leg 4) | 2025-07-13 | 2025 NE CS LCM Senior Championships |
| 200 Freestyle | LCM | 2:11.24 | flying | 800 Free Relay (leg 4) | 2025-07-11 | 2025 NE CS LCM Senior Championships |
| 100 Butterfly | LCM | 1:04.40 | flying | 400 Medley Relay (leg 3) | 2025-07-12 | 2025 NE CS LCM Senior 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 15-16 · SCY
3743 points (4/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:06.84 | 942 |
| 200 FL SCY | 2:03.48 | 1022 |
| 200 IM SCY | 2:09.93 | 881 |
| 400 IM SCY | 4:35.93 | 898 |
| 200 BK SCY | — | 0 |
| 200 BR SCY | — | 0 |
IMR 15-16 · LCM
4256 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:08.44 | 964 |
| 100 BK LCM | 1:12.98 | 712 |
| 100 BR LCM | 1:24.81 | 664 |
| 100 FL LCM | 1:03.31 | 999 |
| 200 IM LCM | 2:27.57 | 917 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 51.95
Front half 24.90s · back half 27.05s
200 Freestyle SCY 1:52.54
Front half 54.53s · back half 58.01s
500 Freestyle SCY 5:06.84
Front half 151.03s · back half 155.81s
100 Breaststroke SCY 1:13.21
Front half 34.81s · back half 38.40s
100 Butterfly SCY 55.61
Front half 26.26s · back half 29.35s
200 Butterfly SCY 2:03.48
Front half 58.07s · back half 65.41s
100 Individual Medley SCY 1:03.51
Front half 30.56s · back half 32.95s
200 Individual Medley SCY 2:09.93
Front half 60.87s · back half 69.06s
400 Individual Medley SCY 4:35.93
Front half 130.79s · back half 145.14s
100 Freestyle LCM 59.08
Front half 28.41s · back half 30.67s
200 Freestyle LCM 2:08.44
Front half 62.09s · back half 66.35s
400 Freestyle LCM 4:33.90
Front half 136.02s · back half 137.88s
100 Backstroke LCM 1:12.98
Front half 35.23s · back half 37.75s
100 Breaststroke LCM 1:24.81
Front half 39.70s · back half 45.11s
100 Butterfly LCM 1:03.31 split/total mismatch
Front half 29.43s · back half 33.88s
200 Butterfly LCM 2:21.26
Front half 66.27s · back half 74.99s
200 Individual Medley LCM 2:27.57
Progression
Faster times are higher. One card per event, all courses & history.