Jacob Yamamoto
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 24.12 | A+0.73s to AA | 2026-02-20 | 2026 CSC Final Countdown venue |
| 100 Freestyle | SCY | 52.18 | A+0.89s to AA | 2026-02-21 | 2026 CSC Final Countdown venue |
| 200 Freestyle | SCY | 1:54.95 | A+2.96s to AA | 2026-02-20 | 2026 CSC Final Countdown venue |
| 500 Freestyle | SCY | 5:23.79 | BB+6.30s to A | 2025-12-12 | Wasatch Winter Invite OBS venue |
| 1000 Freestyle | SCY | 12:04.54 | B+7.85s to BB | 2025-02-20 | 2025 CSC Final Countdown venue |
| 1650 Freestyle | SCY | 20:22.93 | B+28.24s to BB | 2025-01-18 | Stingrays Snowmelt Classic - Jan 2025 venue |
| 50 Backstroke | SCY | 28.90 | BB+1.61s to A | Wasatch Winter Invite 24 venue | |
| 100 Backstroke | SCY | 1:00.60 | BB+2.51s to A | 2026-02-20 | 2026 CSC Final Countdown venue |
| 200 Backstroke | SCY | 2:16.16 | BB+8.87s to A | 2025-01-31 | 2025 UVRays Heart Attack Open venue |
| 50 Breaststroke | SCY | 43.26 | +6.57s to B | 2022-12-21 | 2022 CSC December Developmental slow pool |
| 100 Breaststroke | SCY | 1:07.39 | BB+1.40s to A | 2026-01-31 | 2026 UT Region 9 OBS fast pool |
| 200 Breaststroke | SCY | 2:29.32 | BB+6.13s to A | 2025-12-04 | 2025 UT SC Senior Championships fast pool |
| 50 Butterfly | SCY | 28.90 | BB+1.71s to A | 2025-09-10 | 2025 CSC September Intrasquad venue |
| 100 Butterfly | SCY | 1:01.28 | BB+3.59s to A | 2026-02-21 | 2026 CSC Final Countdown venue |
| 100 Individual Medley | SCY | 1:15.95 | 2022-12-21 | 2022 CSC December Developmental slow pool | |
| 200 Individual Medley | SCY | 2:10.43 | BB+0.74s to A | 2026-01-31 | 2026 UT Region 9 OBS fast pool |
| 400 Individual Medley | SCY | 5:05.40 | B+4.61s to BB | 2025-10-25 | Stingrays Spooktacular - Oct 2025 venue |
| 50 Freestyle | LCM | 27.15 | A+0.06s to AA | 2026-01-01 | Apr |
| 100 Freestyle | LCM | 1:00.72 | A+1.73s to AA | 2026-06-05 | 2026 Utah Summer Games LCM - copied venue |
| 200 Freestyle | LCM | 2:16.85 | BB+2.06s to A | 2026-01-01 | Apr |
| 400 Freestyle | LCM | 4:59.93 | BB+12.34s to A | 2026-05-08 | 2026 CSC May Intrasquad venue |
| 50 Backstroke | LCM | 33.29 | BB+0.80s to A | 2026-06-05 | 2026 Utah Summer Games LCM - copied venue |
| 100 Backstroke | LCM | 1:12.13 | BB+4.04s to A | 2026-01-01 | Apr |
| 200 Backstroke | LCM | 2:41.54 | B+1.55s to BB | 2026-01-01 | Apr |
| 50 Breaststroke | LCM | 37.92 | BB+2.03s to A | 2026-05-09 | 2026 CSC May Intrasquad venue |
| 100 Breaststroke | LCM | 1:23.22 | BB+6.23s to A | 2026-05-22 | Stingrays Swimvitational venue |
| 200 Breaststroke | LCM | 3:00.28 | BB+12.79s to A | 2026-05-09 | 2026 CSC May Intrasquad venue |
| 50 Butterfly | LCM | 30.22 | A+0.73s to AA | 2026-06-06 | 2026 Utah Summer Games LCM - copied venue |
| 100 Butterfly | LCM | 1:12.90 | B+1.41s to BB | 2026-06-06 | 2026 Utah Summer Games LCM - copied venue |
| 200 Butterfly | LCM | 3:03.40 | +11.11s to B | 2026-05-22 | Stingrays Swimvitational venue |
| 200 Individual Medley | LCM | 2:37.08 | BB+5.79s to A | 2026-05-23 | Stingrays Swimvitational venue |
| 400 Individual Medley | LCM | 5:55.42 | B+6.13s to BB | 2026-05-09 | 2026 CSC May Intrasquad venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 16.
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 | 27.77 | flat | 200 Free Relay | 2024-01-19 | Stingrays Snowmelt Classic - Jan 2024 |
| 50 Freestyle | SCY | 23.08 | flying | 200 Free Relay (leg 4) | 2025-12-05 | 2025 UT SC Senior Championships |
| 50 Freestyle | SCY | 24.80 | flying | 200 Medley Relay (leg 4) | 2024-10-26 | Stingrays Spooktacular - Oct 2024 |
| 100 Freestyle | SCY | 1:01.58 | flat | 400 Free Relay | 2023-10-27 | SUSA Spooktakular - Oct 2023 |
| 100 Freestyle | SCY | 51.15 | flying | 400 Free Relay (leg 3) | 2025-10-24 | Stingrays Spooktacular - Oct 2025 |
| 50 Backstroke | SCY | 30.16 | flat | 200 Medley Relay | 2024-03-01 | 2024 UTAGS Short Course Championships |
| 100 Backstroke | SCY | 1:11.32 | flat | 400 Medley Relay | 2022-12-03 | 2022 Winter Stampede Championship |
| 50 Breaststroke | SCY | 41.81 | flying | 200 Medley Relay (leg 2) | 2022-03-04 | 2022 UT SC Age Group Championship |
| 50 Freestyle | LCM | 35.39 | flying | 200 Free Relay (leg 2) | 2022-08-05 | 2022 Utah Beehive LC Finale |
| 100 Freestyle | LCM | 1:22.53 | flying | 400 Free Relay (leg 2) | 2022-08-06 | 2022 Utah Beehive LC Finale |
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 · LCM
3057 points (6/6 events)
| Event | Time | Points |
|---|---|---|
| 400 FR LCM | 4:59.93 | 583 |
| 200 BK LCM | 2:41.54 | 511 |
| 200 BR LCM | 3:00.28 | 529 |
| 200 FL LCM | 3:03.40 | 346 |
| 200 IM LCM | 2:37.08 | 594 |
| 400 IM LCM | 5:55.42 | 494 |
IMR 15-16 · SCY
3119 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:54.95 | 698 |
| 100 BK SCY | 1:00.60 | 585 |
| 100 BR SCY | 1:07.39 | 627 |
| 100 FL SCY | 1:01.28 | 556 |
| 200 IM SCY | 2:10.43 | 653 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 52.18
Front half 24.78s · back half 27.40s
200 Freestyle SCY 1:54.95
Front half 54.72s · back half 60.23s
500 Freestyle SCY 5:23.79
Front half 152.80s · back half 170.99s
1000 Freestyle SCY 12:04.54
Front half 353.81s · back half 370.73s
1650 Freestyle SCY 20:22.93
100 Backstroke SCY 1:00.60
Front half 28.77s · back half 31.83s
200 Backstroke SCY 2:16.16
Front half 64.40s · back half 71.76s
100 Breaststroke SCY 1:07.39
Front half 31.64s · back half 35.75s
200 Breaststroke SCY 2:29.32
Front half 71.84s · back half 77.48s
100 Butterfly SCY 1:01.28
Front half 28.73s · back half 32.55s
100 Individual Medley SCY 1:15.95
Front half 33.07s · back half 42.88s
200 Individual Medley SCY 2:10.43
Front half 60.68s · back half 69.75s
400 Individual Medley SCY 5:05.40
Front half 148.79s · back half 156.61s
100 Freestyle LCM 1:00.72
Front half 28.76s · back half 31.96s
200 Freestyle LCM 2:16.85 split/total mismatch
Front half 33.84s · back half 103.01s
100 Backstroke LCM 1:12.13 split/total mismatch
Front half 33.78s · back half 38.35s
200 Backstroke LCM 2:41.54 split/total mismatch
Front half 40.42s · back half 121.12s
100 Breaststroke LCM 1:23.22
Front half 39.35s · back half 43.87s
200 Breaststroke LCM 3:00.28
Front half 86.51s · back half 93.77s
100 Butterfly LCM 1:12.90
Front half 33.76s · back half 39.14s
200 Butterfly LCM 3:03.40
Front half 85.28s · back half 98.12s
200 Individual Medley LCM 2:37.08
Front half 74.19s · back half 82.89s
400 Individual Medley LCM 5:55.42
Front half 174.82s · back half 180.60s
Progression
Faster times are higher. One card per event, all courses & history.