Career
He bats and throws right-handed. Oh played college baseball at Wonkwang University. After graduating, he went undrafted in the 2008 KBO Draft.
Oh was signed by the Doosan Bears as an undrafted free agent prior to the 2008 KBO season.
Oh was promoted to the Bears" first team in the 2009 season, but appeared in only 14 games as a relief pitcher, posting a 4.45 European Research Area in 30.1 innings pitched. In his first international competition ever, Oh had impressive performances, compiling a 0.40 European Research Area, racking up 2 wins as a starting pitcher and fanning a tournament-leading 35 batters.
He shut out Australia (80 Intellectual Property, 12 K) and Italy (72 Intellectual Property, 14 K), and was named to the All-Star team as a starting pitcher. Notable international careers.