Koo Ja-wook
구자욱
Rookie of the year in 2015, Samsung's captain since 2023, and the club's best hitter through its return to contention. A high-average, high-doubles left fielder whose value the wOBA column sees better than the home run column does.
A 33-year-old left-handed-hitting outfielder for the Samsung Lions, drafted by Samsung in 2012, second round, 12th overall. This is his 15th season since a 2012 debut, by way of Samsung → Sangmu. This season: .371/.458/.581 in 497 plate appearances, 15 home runs, 6 steals, a 188 wRC+ and 6.38 WAR — 3rd of 48 qualified hitters.
- Born
- 1993-02-12· 33
- Position
- Outfielder· LF
- Bats / throws
- bats left, throws right
- Height · Weight
- 189 cm · 75 kg
- Draft
- Drafted by Samsung in 2012, second round, 12th overall
- Debut
- 2012
Path본리초경복중대구고삼성상무
Percentile
Against the league
Percentile against every qualified hitter in the league this season.
114 G
Batting line
| PA | 497 | AB | 420 |
| H | 156 | 2B | 31 |
| 3B | 6 | HR | 15 |
| R | 88 | RBI | 102 |
| BB | 66 | IBB | 3 |
| HBP | 5 | SO | 71 |
| SB | 6 | CS | 2 |
| GDP | 4 | SF | 5 |
| AVG | .371 | OBP | .458 |
| SLG | .581 | OPS | 1.039 |
Advanced
| wOBA | .464 | wRC+ | 188 |
| OPS+ | 176 | ISO | .210 |
| BABIP | .416 | BB/K | 0.93 |
| wRAA | +56.5 | wRC | 120.4 |
| Baserunning | +0.4 | SB% | 75% |
| WAR | 6.38 | PA/HR | 33.1 |
Fielding
| Innings | 785 | Positions | LF |
| PO | 162 | A | 4 |
| E | 5 | DP | 1 |
| FPCT | .971 |
Nearest neighbours
Closest comparables
Nearest neighbours by standardised rate profile, not by reputation.
| Player | Team | PA | wOBA | ISO | BB% | K% | wRC+ | WAR |
|---|---|---|---|---|---|---|---|---|
| Austin Dean | LG | 640 | .468 | .304 | 12.7% | 14.8% | 191 | 7.90 |
| Choi Won-joon | KT | 676 | .421 | .130 | 11.2% | 12.7% | 156 | 6.04 |
| Lewin Diaz | Samsung | 625 | .401 | .205 | 11.7% | 15.7% | 141 | 3.93 |
| Yonathan Perlaza | Hanwha | 558 | .409 | .204 | 16.3% | 18.6% | 147 | 4.30 |
| Victor Reyes | Lotte | 636 | .421 | .165 | 7.5% | 10.2% | 156 | 5.54 |
WAR here is Moneyball Labs' own estimate: offence from wRAA, a steals-only baserunning term, the standard positional adjustment, and no fielding component beyond position. It is honest about what it does not measure.