Rangers pitcher Colby Lewis will miss the rest of the season because of a torn flexor tendon in his right elbow that will require surgery.
Lewis was evaluated by team physician Dr. Keith Meister before Monday's game against the Boston Red Sox. Meister will perform the operation later this week.
Before the game, Texas manager Ron Washington called Lewis the team's "anchor."
In 16 starts, Lewis is 6-6 with a 3.43 ERA.