Oh joined Pohang Steelers in 2016.[2][3] In 2015 season he didn't play any game because of his frequent injuries. On 12 June 2016, Oh finally made his league debut against Jeonnam Dragons at Gwangyang Football Stadium. In this match, Oh played 33 minutes after he was substituted for Hwang Ji-soo.[4] On 29 June 2016, Oh scored his first professional goal in the Donghaean derby with Ulsan Hyundai.[5] In the match, Pohang won by 4–0.
^‘1골 1도움’ 오창현, 동해안 더비 승리의 주역 ['1 goal, 1 assist' Oh Chang-hyeon, a crucial player of victory in the Donghaean Derby] (in Korean). interfootball.com. 29 June 2016.
^"명단 : KFA". kfa.or.kr (in Korean). Retrieved 13 September 2016.