Dodgers pitcher Hyun-Jin Ryu was unable to take the field for Los Angeles' workout on Wednesday after experiencing mid-back tightness after a bullpen session on Tuesday, according to the Orange County Register.
Ryu was reportedly not pleased with his session on Tuesday, saying he threw too many fastballs out of the zone. The 27-year-old from South Korea experienced some shoulder fatigue last season, and as a result, posted a 3.38 ERA over 152 innings. He's targeting to reach the 200-inning threshold in 2015.