Los Angeles left-hander Hyun-Jin Ryu exited his Monday road start against the St. Louis Cardinals due to a left groin strain, and he will go on the injured list Tuesday, Dodgers manager Dave Roberts said. Last year, a torn left groin muscle sidelined Ryu from early May to mid-August. "It was different from the pain I felt last year," Ryu said Monday night through an interpreter, via MLB.com.