swimKoki Yamamoto
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 24.49 | BB+0.10s to A | 2025-03-01 | 2025 Gulf 13 & Over Champs (PEAK) fast pool |
| 100 Freestyle | SCY | 50.54 | AA+1.55s to AAA | 2025-01-01 | 2025 Southern Senior Championships |
| 200 Freestyle | SCY | 1:53.69 | A+1.70s to AA | 2025-01-12 | 2025 Tracey Harper-Santiago Memorial Meet venue |
| 500 Freestyle | SCY | 5:07.18 | A+2.89s to AA | 2024-12-07 | 2024 Gulf Southern Senior Championships venue |
| 100 Backstroke | SCY | 1:03.47 | B+0.58s to BB | 2024-11-02 | SSAN 2024 Fall Invite venue |
| 50 Breaststroke | SCY | 26.47 | AAAA | 2026-03-05 | LAC Spring Speedo Sectionals |
| 100 Breaststroke | SCY | 57.59 | AAAA | 2025-01-01 | 2025 Southern Senior Championships |
| 200 Breaststroke | SCY | 2:03.94 | AAAA | 2026-03-05 | LAC Spring Speedo Sectionals |
| 100 Butterfly | SCY | 55.59 | A+0.30s to AA | 2025-03-02 | 2025 Gulf 13 & Over Champs (PEAK) fast pool |
| 200 Butterfly | SCY | 2:02.84 | AA+4.45s to AAA | 2026-03-05 | LAC Spring Speedo Sectionals |
| 200 Individual Medley | SCY | 2:01.38 | AA+2.49s to AAA | 2025-03-02 | 2025 Gulf 13 & Over Champs (PEAK) fast pool |
| 400 Individual Medley | SCY | 4:10.79 | AAA+7.80s to AAAA | 2026-03-05 | LAC Spring Speedo Sectionals |
| 50 Freestyle | LCM | 27.43 | A+0.34s to AA | 2026-01-01 | Katy Aquatics |
| 100 Freestyle | LCM | 58.34 | AA+1.85s to AAA | 2026-01-01 | Katy Aquatics |
| 200 Freestyle | LCM | 2:08.71 | AA+5.12s to AAA | 2025-01-01 | Katy Aquatics |
| 400 Freestyle | LCM | 4:32.29 | AA+8.60s to AAA | 2025-01-01 | 2025 Texas Senior Circuit I |
| 200 Backstroke | LCM | 2:40.36 | B+0.37s to BB | 2024-06-20 | 2024 ST AAAA NS George Block Invite venue |
| 100 Breaststroke | LCM | 1:07.42 | AAA+0.03s to AAAA | 2025-07-25 | 2025 NCSA Summer Swimming Championships |
| 200 Breaststroke | LCM | 2:28.54 | AAA+2.05s to AAAA | 2025-07-25 | 2025 NCSA Summer Swimming Championships |
| 100 Butterfly | LCM | 1:05.10 | A+1.91s to AA | 2024-06-21 | 2024 ST AAAA NS George Block Invite venue |
| 200 Butterfly | LCM | 2:14.29 | AAA+5.10s to AAAA | 2025-07-10 | 2025 ST TXLA SZ LC Sectional Champs venue |
| 200 Individual Medley | LCM | 2:18.79 | AA+0.10s to AAA | 2025-07-25 | 2025 NCSA Summer Swimming Championships |
| 400 Individual Medley | LCM | 4:52.84 | AAA+10.75s to AAAA | 2025-07-11 | 2025 ST TXLA SZ LC Sectional Champs 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 |
|---|---|---|---|---|---|---|
| 100 Breaststroke | SCY | 1:01.47 | flying | 400 Medley Relay (leg 2) | 2025-03-01 | 2025 Gulf 13 & Over Champs (PEAK) |
| 200 Freestyle | LCM | 2:12.32 | flying | 800 Free Relay (leg 3) | 2024-07-20 | 2024 Texas Age Group Swimming LC Champs |
| 100 Breaststroke | LCM | 1:12.46 | flying | 400 Medley Relay (leg 2) | 2024-07-18 | 2024 Texas Age Group Swimming LC 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 15-16 · LCM
4876 points (6/6 events)
| Event | Time | Points |
|---|---|---|
| 400 FR LCM | 4:32.29 | 779 |
| 200 BK LCM | 2:40.36 | 522 |
| 200 BR LCM | 2:28.54 | 947 |
| 200 FL LCM | 2:14.29 | 882 |
| 200 IM LCM | 2:18.79 | 862 |
| 400 IM LCM | 4:52.84 | 884 |
IMR 15-16 · SCY
3789 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:53.69 | 721 |
| 100 BK SCY | 1:03.47 | 509 |
| 100 BR SCY | 57.59 | 1005 |
| 100 FL SCY | 55.59 | 744 |
| 200 IM SCY | 2:01.38 | 810 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
200 Freestyle SCY 1:53.69
Front half 55.02s · back half 58.67s
500 Freestyle SCY 5:07.18
Front half 151.97s · back half 155.21s
100 Backstroke SCY 1:03.47
Front half 31.50s · back half 31.97s
200 Breaststroke SCY 2:03.94 split/total mismatch
Front half 31.22s · back half 92.72s
100 Butterfly SCY 55.59
Front half 26.44s · back half 29.15s
200 Butterfly SCY 2:02.84 split/total mismatch
Front half 30.48s · back half 92.36s
200 Individual Medley SCY 2:01.38
Front half 58.97s · back half 62.41s
400 Individual Medley SCY 4:10.79 split/total mismatch
50 Freestyle LCM 27.43 split/total mismatch
Front half 138.00s · back half -110.57s
200 Freestyle LCM 2:08.71
400 Freestyle LCM 4:32.29 split/total mismatch
Front half 64.86s · back half 207.43s
200 Backstroke LCM 2:40.36
Front half 79.16s · back half 81.20s
100 Butterfly LCM 1:05.10
Front half 31.28s · back half 33.82s
200 Butterfly LCM 2:14.29
Front half 64.47s · back half 69.82s
400 Individual Medley LCM 4:52.84
Front half 144.89s · back half 147.95s
Progression
Faster times are higher. One card per event, all courses & history.