Emerson Cosner
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 24.81 | AAA+1.02s to AAAA | 2022-02-26 | 2022 VA Central District 13&O Championships fast pool |
| 100 Freestyle | SCY | 53.12 | AAA+1.43s to AAAA | 2022-03-06 | 2022 VSI SC Senior Championships venue |
| 200 Freestyle | SCY | 1:54.23 | AAA+2.54s to AAAA | 2023-03-03 | 2023 VSI SC Senior Championships venue |
| 500 Freestyle | SCY | 5:08.96 | AAA+7.67s to AAAA | 2023-03-04 | 2023 VSI SC Senior Championships venue |
| 1000 Freestyle | SCY | 10:43.32 | AAA+20.03s to AAAA | 2023-03-05 | 2023 VSI SC Senior Championships venue |
| 1650 Freestyle | SCY | 18:13.87 | AAA+46.98s to AAAA | 2023-11-05 | 2023 Commonwealth Cup venue |
| 100 Backstroke | SCY | 1:00.37 | AA+1.88s to AAA | 2024-02-24 | 2024 Central District 13&O Championships fast pool |
| 200 Backstroke | SCY | 2:10.76 | AA+3.77s to AAA | 2024-02-25 | 2024 Central District 13&O Championships fast pool |
| 100 Breaststroke | SCY | 1:13.14 | A+2.85s to AA | 2022-02-25 | 2022 VA Central District 13&O Championships fast pool |
| 200 Breaststroke | SCY | 2:35.53 | A+2.04s to AA | 2022-02-26 | 2022 VA Central District 13&O Championships fast pool |
| 100 Butterfly | SCY | 57.40 | AAA+1.81s to AAAA | 2024-03-01 | 2024 VSI SC Senior Championships venue |
| 200 Butterfly | SCY | 2:05.40 | AAA+1.61s to AAAA | 2024-03-03 | 2024 VSI SC Senior Championships venue |
| 100 Individual Medley | SCY | 1:10.13 | 2021-09-25 | 2021 VA QSTS Intrasquad Meet venue | |
| 200 Individual Medley | SCY | 2:11.65 | AA+1.06s to AAA | 2022-02-27 | 2022 VA Central District 13&O Championships fast pool |
| 400 Individual Medley | SCY | 4:40.59 | AA+2.40s to AAA | 2022-02-25 | 2022 VA Central District 13&O Championships fast pool |
| 50 Freestyle | LCM | 28.18 | AAA+1.09s to AAAA | 2022-07-17 | 2022 VA LC Senior Champs venue |
| 100 Freestyle | LCM | 59.89 | AAA+1.20s to AAAA | 2022-07-14 | 2022 VA LC Senior Champs venue |
| 200 Freestyle | LCM | 2:10.42 | AAA+3.33s to AAAA | 2022-07-15 | 2022 VA LC Senior Champs venue |
| 400 Freestyle | LCM | 4:40.47 | AAA+12.18s to AAAA | 2022-07-16 | 2022 VA LC Senior Champs venue |
| 800 Freestyle | LCM | 9:51.29 | AA+8.80s to AAA | 2023-07-13 | 2023 VA LC Senior Champs venue |
| 1500 Freestyle | LCM | 18:43.30 | AA+12.41s to AAA | 2022-07-17 | 2022 VA LC Senior Champs venue |
| 50 Backstroke | LCM | 34.99 | A+1.00s to AA | 2022-06-17 | 2022 VA SwimRVA Summer Invitational venue |
| 100 Backstroke | LCM | 1:16.91 | BB+2.32s to A | 2024-05-05 | BASS Jim Frye Memorial Invitational May 202 venue |
| 50 Butterfly | LCM | 30.67 | AA+0.08s to AAA | 2022-06-17 | 2022 VA SwimRVA Summer Invitational venue |
| 100 Butterfly | LCM | 1:05.09 | AAA+1.80s to AAAA | 2024-01-13 | NOVA LC Winter Invitational venue |
| 200 Butterfly | LCM | 2:23.16 | AAA+3.27s to AAAA | 2024-01-14 | NOVA LC Winter Invitational venue |
| 200 Individual Medley | LCM | 2:36.32 | AA+6.43s to AAA | 2022-05-20 | 2022 VA CGBD May Spring Luau Meet slow pool |
| 400 Individual Medley | LCM | 5:33.19 | A+0.60s to AA | 2022-05-21 | 2022 VA CGBD May Spring Luau Meet slow pool |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 17.
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 |
|---|---|---|---|---|---|---|
| 100 Butterfly | SCY | 57.33 | flying | 400 Medley Relay (leg 3) | 2023-11-04 | 2023 Commonwealth Cup |
| 100 Freestyle | LCM | 1:00.63 | flying | 400 Medley Relay (leg 4) | 2022-05-15 | 2022 VA EZ LC Speedo Super Sectional |
| 100 Freestyle | LCM | 1:00.30 | flying | 400 Free Relay (leg 4) | 2022-05-13 | 2022 VA EZ LC Speedo Super Sectional |
| 200 Freestyle | LCM | 2:11.73 | flying | 800 Free Relay (leg 4) | 2022-05-14 | 2022 VA EZ LC Speedo Super Sectional |
| 100 Butterfly | LCM | 1:06.38 | flying | 400 Medley Relay (leg 3) | 2023-05-21 | 2023 EZ LC Speedo Super Sectional |
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
4906 points (6/6 events)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:08.96 | 891 |
| 200 BK SCY | 2:10.76 | 755 |
| 200 BR SCY | 2:35.53 | 706 |
| 200 FL SCY | 2:05.40 | 922 |
| 200 IM SCY | 2:11.65 | 809 |
| 400 IM SCY | 4:40.59 | 823 |
IMR 17-18 · SCY
4011 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:54.23 | 902 |
| 100 BK SCY | 1:00.37 | 755 |
| 100 BR SCY | 1:13.14 | 657 |
| 100 FL SCY | 57.40 | 888 |
| 200 IM SCY | 2:11.65 | 809 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 53.12
Front half 25.70s · back half 27.42s
200 Freestyle SCY 1:54.23
Front half 55.46s · back half 58.77s
500 Freestyle SCY 5:08.96
Front half 152.16s · back half 156.80s
1000 Freestyle SCY 10:43.32
Front half 322.94s · back half 320.38s
1650 Freestyle SCY 18:13.87
100 Backstroke SCY 1:00.37
Front half 29.46s · back half 30.91s
200 Backstroke SCY 2:10.76
Front half 63.62s · back half 67.14s
100 Breaststroke SCY 1:13.14
Front half 34.78s · back half 38.36s
200 Breaststroke SCY 2:35.53
Front half 74.94s · back half 80.59s
100 Butterfly SCY 57.40
Front half 26.95s · back half 30.45s
200 Butterfly SCY 2:05.40
Front half 60.02s · back half 65.38s
200 Individual Medley SCY 2:11.65
Front half 60.52s · back half 71.13s
400 Individual Medley SCY 4:40.59
Front half 134.14s · back half 146.45s
100 Freestyle LCM 59.89 RT 0.70s
Front half 28.76s · back half 31.13s
200 Freestyle LCM 2:10.42 RT 0.73s
Front half 63.80s · back half 66.62s
400 Freestyle LCM 4:40.47 RT 0.69s
Front half 140.11s · back half 140.36s
800 Freestyle LCM 9:51.29 RT 0.75s
Front half 295.62s · back half 295.67s
1500 Freestyle LCM 18:43.30 RT 0.72s
Front half 559.91s · back half 563.39s
100 Butterfly LCM 1:05.09
Front half 30.73s · back half 34.36s
200 Butterfly LCM 2:23.16
Front half 67.01s · back half 76.15s
200 Individual Medley LCM 2:36.32
Front half 73.55s · back half 82.77s
400 Individual Medley LCM 5:33.19
Front half 164.61s · back half 168.58s
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.
Progression
Faster times are higher. One card per event, all courses & history.