swimArisa Yamamoto
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 28.14 | AA+1.15s to AAA | 2025-02-21 | MAC Hosted 2025 Gulf 12 & Under Champs |
| 100 Freestyle | SCY | 59.20 | AA+0.51s to AAA | 2026-01-09 | 2026 Tracey Harper-Santiago Memorial Meet |
| 200 Freestyle | SCY | 2:09.56 | AA+1.17s to AAA | 2025-12-05 | 2025 Gulf Age Group Championships |
| 500 Freestyle | SCY | 5:44.19 | AA+0.60s to AAA | 2026-02-20 | 2026 Gulf 12 & Under Championships |
| 50 Backstroke | SCY | 30.57 | AA+0.08s to AAA | 2026-02-20 | 2026 Gulf 12 & Under Championships |
| 100 Backstroke | SCY | 1:05.63 | AAA+2.94s to AAAA | 2026-02-20 | 2026 Gulf 12 & Under Championships |
| 200 Backstroke | SCY | 2:26.17 | AA+4.68s to AAA | 2026-01-09 | 2026 Tracey Harper-Santiago Memorial Meet |
| 50 Breaststroke | SCY | 34.40 | AAA+1.41s to AAAA | 2026-01-09 | 2026 Tracey Harper-Santiago Memorial Meet |
| 100 Breaststroke | SCY | 1:13.53 | AAA+2.04s to AAAA | 2026-01-09 | 2026 Tracey Harper-Santiago Memorial Meet |
| 200 Breaststroke | SCY | 2:38.13 | AAA+3.74s to AAAA | 2026-01-09 | 2026 Tracey Harper-Santiago Memorial Meet |
| 50 Butterfly | SCY | 30.16 | AA+1.07s to AAA | 2025-12-05 | 2025 Gulf Age Group Championships |
| 100 Butterfly | SCY | 1:07.09 | AA+1.60s to AAA | 2025-12-05 | 2025 Gulf Age Group Championships |
| 100 Individual Medley | SCY | 1:05.12 | AAA+1.13s to AAAA | 2026-02-20 | 2026 Gulf 12 & Under Championships |
| 200 Individual Medley | SCY | 2:24.02 | AAA+6.03s to AAAA | 2025-12-05 | 2025 Gulf Age Group Championships |
| 50 Freestyle | LCM | 31.72 | AA+1.03s to AAA | 2026-01-01 | Katy Aquatics |
| 100 Freestyle | LCM | 1:05.02 | AAA+0.73s to AAAA | 2026-04-18 | 2026 DADS April Intrasquad |
| 200 Freestyle | LCM | 2:28.34 | AA+1.55s to AAA | 2025-01-01 | Katy Aquatics |
| 400 Freestyle | LCM | 5:46.05 | BB+9.26s to A | 2025-01-01 | Katy Aquatics |
| 50 Backstroke | LCM | 37.26 | A+0.37s to AA | 2025-06-06 | 2025 BATS June Invite |
| 100 Backstroke | LCM | 1:22.32 | A+1.53s to AA | 2025-01-01 | Katy Aquatics |
| 200 Backstroke | LCM | 2:51.31 | A+0.32s to AA | 2026-01-01 | Katy Aquatics |
| 50 Breaststroke | LCM | 41.45 | A+0.56s to AA | 2026-06-13 | 2026 ST NIST George Block Invitational fast pool |
| 100 Breaststroke | LCM | 1:29.21 | AA+3.32s to AAA | 2026-06-14 | 2026 ST NIST George Block Invitational fast pool |
| 200 Breaststroke | LCM | 3:12.97 | AA+6.58s to AAA | 2025-06-06 | 2025 BATS June Invite |
| 50 Butterfly | LCM | 32.26 | AAA+0.87s to AAAA | 2025-07-23 | 2025 Texas Age Group Championships |
| 100 Butterfly | LCM | 1:15.95 | AA+1.16s to AAA | 2026-06-11 | 2026 ST NIST George Block Invitational |
| 200 Individual Medley | LCM | 2:37.18 | AAAA | 2025-07-23 | 2025 Texas Age Group Championships |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 12.
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 | LCM | 30.45 | flying | 200 Free Relay (leg 2) | 2025-07-20 | 2025 Texas Age Group Championships |
| 100 Freestyle | LCM | 1:06.77 | flat | 400 Free Relay | 2025-07-18 | 2025 Texas Age Group Championships |
| 50 Breaststroke | LCM | 39.97 | flying | 200 Medley Relay (leg 2) | 2025-07-19 | 2025 Texas Age Group Championships |
| 100 Breaststroke | LCM | 1:28.46 | flying | 400 Medley Relay (leg 2) | 2025-07-17 | 2025 Texas Age Group 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
4310 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:44.19 | 862 |
| 100 BK SCY | 1:05.63 | 871 |
| 100 BR SCY | 1:13.53 | 919 |
| 100 FL SCY | 1:07.09 | 781 |
| 200 IM SCY | 2:24.02 | 877 |
IMR 11-12 · SCY
4292 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:09.56 | 832 |
| 50 BK SCY | 30.57 | 861 |
| 50 BR SCY | 34.40 | 882 |
| 50 FL SCY | 30.16 | 773 |
| 100 IM SCY | 1:05.12 | 944 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
500 Freestyle SCY 5:44.19 split/total mismatch
100 Backstroke SCY 1:05.63 split/total mismatch
Front half 32.47s · back half 33.16s
100 Individual Medley SCY 1:05.12 split/total mismatch
Front half 30.99s · back half 34.13s
50 Freestyle LCM 31.72 split/total mismatch
Front half 117.66s · back half -85.94s
400 Freestyle LCM 5:46.05
200 Backstroke LCM 2:51.31
Front half 85.62s · back half 85.69s
100 Breaststroke LCM 1:29.21
Front half 43.31s · back half 45.90s
200 Individual Medley LCM 2:37.18 split/total mismatch
Progression
Faster times are higher. One card per event, all courses & history.