Oh is considering a return to South Korea to play in the Korea Baseball Organization in 2019. "I feel like I want to return to the KBO while I still have the energy to help the team and pitch in front of home fans," the 36-year-old Oh said. "I can't make this decision alone. I'll have to speak with my agency about the next season." Oh cited fatigue from living in a foreign country as the main reason for this potential transition, Patrick Saunders of The Denver Post reports.

The Rockies traded for Oh in late July to help revamp their bullpen, and he wound up logging a 2.53 ERA and 1.03 WHIP with 24 strikeouts in 21.1 innings of relief. Since he went over 70 total appearances in 2018, Oh has a vesting club option of $2.5 million for next year.