Huge blow to them, obviously:
"Yu Darvish is considering the possibility of undergoing Tommy John surgery after tests revealed that the Texas Rangers ace has a sprained ligament in his pitching elbow."
http://espn.go.com/dallas/mlb/story/_/id/12438332/yu-darvish-texas-rangers-sprained-elbow-ligament-mulling-tommy-john-surgery
"Yu Darvish is considering the possibility of undergoing Tommy John surgery after tests revealed that the Texas Rangers ace has a sprained ligament in his pitching elbow."
http://espn.go.com/dallas/mlb/story/_/id/12438332/yu-darvish-texas-rangers-sprained-elbow-ligament-mulling-tommy-john-surgery