Casey Yamauchi
#10 SS · B/T: R/R · 5' 9", 155 lb · Age 25 · Hilo, HI, USA · Midland RockHounds (Athletics)
Career Graph
Batting
| Season | Team | G | PA | AB | R | H | 2B | 3B | HR | RBI | SB | BB | SO | BB% | K% | AVG | OBP | SLG | OPS | wOBA | wRC+ | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Triple-A (AAA) | ||||||||||||||||||||||
| 2026 | LV | 3 | 4 | 4 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0.0% | 25.0% | .250 | .250 | .500 | .750 | — | — | — |
| AAA Total | 3 | 4 | 4 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0.0% | 25.0% | .250 | .250 | .500 | .750 | — | — | — | |
| Double-A (AA) | ||||||||||||||||||||||
| 2023 | MID | 11 | 35 | 31 | 7 | 6 | 1 | 0 | 0 | 4 | 1 | 2 | 5 | 5.7% | 14.3% | .194 | .286 | .226 | .512 | — | — | — |
| 2025 | MID | 4 | 19 | 19 | 3 | 9 | 1 | 1 | 1 | 4 | 0 | 0 | 2 | 0.0% | 10.5% | .474 | .474 | .789 | 1.263 | — | — | — |
| 2026 | MID | 20 | 78 | 69 | 11 | 23 | 1 | 1 | 3 | 14 | 1 | 5 | 4 | 6.4% | 5.1% | .333 | .390 | .507 | .897 | — | — | — |
| 2026 pace | 28 | 108 | 96 | 15 | 32 | 1 | 1 | 4 | 19 | 1 | 7 | 6 | ||||||||||
| AA Total | 35 | 132 | 119 | 21 | 38 | 3 | 2 | 4 | 22 | 2 | 7 | 11 | 5.3% | 8.3% | .319 | .374 | .479 | .853 | — | — | — | |
| High-A (A+) | ||||||||||||||||||||||
| 2023 | LAN | 3 | 12 | 9 | 0 | 6 | 1 | 0 | 0 | 1 | 3 | 2 | 1 | 16.7% | 8.3% | .667 | .750 | .778 | 1.528 | — | — | — |
| 2024 | LAN | 52 | 197 | 178 | 24 | 42 | 4 | 0 | 0 | 13 | 13 | 11 | 14 | 5.6% | 7.1% | .236 | .306 | .258 | .564 | — | — | — |
| 2025 | LAN | 119 | 481 | 435 | 38 | 120 | 21 | 3 | 1 | 55 | 13 | 22 | 36 | 4.6% | 7.5% | .276 | .328 | .345 | .673 | — | — | — |
| 2026 | LAN | 48 | 201 | 172 | 38 | 51 | 9 | 1 | 4 | 30 | 9 | 17 | 19 | 8.5% | 9.5% | .297 | .387 | .430 | .817 | — | — | — |
| A+ Total | 222 | 891 | 794 | 100 | 219 | 35 | 4 | 5 | 99 | 38 | 52 | 70 | 5.8% | 7.9% | .276 | .342 | .349 | .691 | — | — | — | |
| Single-A (A) | ||||||||||||||||||||||
| 2024 | STK | 35 | 132 | 114 | 18 | 36 | 6 | 2 | 0 | 12 | 7 | 10 | 13 | 7.6% | 9.8% | .316 | .389 | .404 | .793 | — | — | — |
| A Total | 35 | 132 | 114 | 18 | 36 | 6 | 2 | 0 | 12 | 7 | 10 | 13 | 7.6% | 9.8% | .316 | .389 | .404 | .793 | — | — | — | |
| Rookie (Rk) | ||||||||||||||||||||||
| 2023 | A-ATH | 3 | 8 | 5 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 37.5% | 0.0% | .400 | .625 | .400 | 1.025 | — | — | — |
| Rk Total | 3 | 8 | 5 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 37.5% | 0.0% | .400 | .625 | .400 | 1.025 | — | — | — | |
| Minors Total | 298 | 1167 | 1036 | 143 | 296 | 45 | 8 | 9 | 134 | 47 | 72 | 95 | 6.2% | 8.1% | .286 | .353 | .371 | .724 | — | — | — | |
Pitching
| Season | Team | W | L | SV | G | GS | QS | IP | IP/G | SO | K/9 | BB/9 | ERA | FIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Double-A (AA) | |||||||||||||||
| 2023 | MID | 0 | 0 | 0 | 1 | 0 | — | 1.0 | 1.0 | 2 | 18.0 | 0.0 | 0.00 | — | — |
| AA Total | 0 | 0 | 0 | 1 | 0 | — | 1.0 | 1.0 | 2 | 18.0 | 0.0 | 0.00 | — | — | |
Fielding
| Season | Team | Pos | G | Inn | PO | A | E | FPCT |
|---|---|---|---|---|---|---|---|---|
| Triple-A (AAA) | ||||||||
| 2026 | LV | 2B | 2 | 9.0 | 2 | 2 | 0 | 1.000 |
| 2026 | LV | 3B | 1 | 1.0 | 1 | 0 | 0 | 1.000 |
| AAA Total | — | 3 | 10.0 | 3 | 2 | 0 | 1.000 | |
| Double-A (AA) | ||||||||
| 2023 | MID | 2B | 9 | 80.0 | 13 | 31 | 1 | .978 |
| 2023 | MID | P | 1 | 1.0 | 0 | 0 | 0 | .000 |
| 2023 | MID | DH | 1 | 0.0 | 0 | 0 | 0 | .000 |
| 2025 | MID | 2B | 4 | 36.0 | 6 | 18 | 1 | .960 |
| 2026 | MID | 2B | 20 | 167.1 | 29 | 47 | 2 | .974 |
| AA Total | — | 35 | 284.1 | 48 | 96 | 4 | .973 | |
| High-A (A+) | ||||||||
| 2023 | LAN | SS | 3 | 25.0 | 10 | 5 | 0 | 1.000 |
| 2024 | LAN | 2B | 36 | 295.0 | 69 | 86 | 3 | .981 |
| 2024 | LAN | SS | 11 | 98.0 | 19 | 31 | 2 | .962 |
| 2024 | LAN | DH | 5 | 0.0 | 0 | 0 | 0 | .000 |
| 2025 | LAN | 2B | 104 | 898.0 | 172 | 281 | 14 | .970 |
| 2025 | LAN | SS | 8 | 66.2 | 9 | 17 | 1 | .963 |
| 2025 | LAN | 3B | 1 | 9.0 | 0 | 0 | 0 | .000 |
| 2025 | LAN | DH | 6 | 0.0 | 0 | 0 | 0 | .000 |
| 2026 | LAN | 2B | 39 | 332.2 | 78 | 106 | 5 | .974 |
| 2026 | LAN | LF | 1 | 1.0 | 0 | 0 | 0 | .000 |
| 2026 | LAN |
DH
|
4
|
0.0
|
0
|
0
|
0
|
.000
|
| A+ Total | — | 218 | 1725.1 | 357 | 526 | 25 | .972 | |
| Single-A (A) | ||||||||
| 2024 | STK | 2B | 30 | 254.2 | 47 | 88 | 10 | .931 |
| 2024 | STK | 3B | 2 | 18.0 | 2 | 2 | 0 | 1.000 |
| 2024 | STK | SS | 1 | 8.0 | 0 | 1 | 0 | 1.000 |
| 2024 | STK | DH | 2 | 0.0 | 0 | 0 | 0 | .000 |
| A Total | — | 35 | 280.2 | 49 | 91 | 10 | .933 | |
| Rookie (Rk) | ||||||||
| 2023 | A-ATH | 2B | 3 | 12.0 | 2 | 6 | 0 | 1.000 |
| Rk Total | — | 3 | 12.0 | 2 | 6 | 0 | 1.000 | |
| Minors Total | — | 294 | 2312.1 | 459 | 721 | 39 | .968 | |
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