 On September 28, he underwent debridement surgery on his left elbow.After losing his first four decisions of the season, Ryu picked up his first major league win since the 2014 season on April 30, 2017 in a 5-3 win against the Philadelphia Phillies.On May 25, he pitched four scoreless innings out of the bullpen to pick up his first major league save in a 7-4 win against the St. Louis Cardinals.