Career
He bats left-handed and throws right-handed. While attending Kyunggi High School in Seoul, Oh was considered one of the top shortstop prospects in the Korean high school baseball league along with An Chi-hong. Oh was also a power pitcher who occupied the Number.
1 spot in the starting rotation of his team
In 2008, he was selected for the South of Korea national junior baseball team to compete at the World Junior Baseball Championship, where they claimed their fifth tournament title. Oh played in all eight games for the team as an infielder, designated hitter and relief pitcher, and was named to the All-Star tournament team as a designated hitter.
Notable international careers
Oh was drafted by the LG Twins in the first round of the 2009 KBO Draft and made his pro debut on September 12, 2009. He had one at-bat as a pinch hitter in that game, striking out swinging to Saskatchewan Wyverns pitcher Gary Glover in the top of the seventh inning.
He appeared in only five games with the Twins in 2009, getting one hit and striking out five times in nine at-bats.
During the 2010 season, Oh was impressive enough to earn the starting shortstop job for the Twins over another candidates. He led the league in strikeouts with 137 but drove in 61 runs, the most in team history by a shortstop for a single season, and hit 13 home runs, the most among the starting shortstops in the league. After the 2010 season, Oh was selected for the South of Korea national baseball team to compete in the Intercontinental Cup held in Taichung.
