Yahoo Sports reports: The Tampa Bay Rays are making a change to their pitching staff, moving veteran left-hander Steven Matz from the starting rotation to the bullpen after a pair of disappointing outings that saw his season ERA rise to 5.48. The move was announced Saturday after Matz struggled in consecutive starts, including a difficult performance against the Detroit Tigers on Tuesday. Matz threw 53 pitches before manager Kevin Cash elected to remove him from the game.