The Cardinals signed Oh to a one-year agreement on Jan. 11, nearly seven years after first scouting him in the World Baseball Classic. Oh became the first Asian-born player to join the organization since So Taguchi in 2002, and he'll serve as a setup man ahead of closer Trevor Rosenthal.
It will be a change of roles for Oh, who logged 357 saves while playing professionally in Korea and Japan from 2005-15. He still ranks as the Korean Baseball Organization's career saves leader with 277, and he reached 100 saves in fewer games than anyone in the league's history.