UPDATE: Buchholz left the game with a tight neck, the team announced. He originally suffered the injury on the play when he fell covering first base, and it gradually stiffened up as the game progressed.
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Clay Buchholz left Saturday's start after 6 2/3 innings and 104 pitches due to apparent injury. The Red Sox right-hander called the trainer out to the mound and left before attempting to throw a test pitch.
It was a rough game physically for Buchholz, and he could have been injured a number of ways. He fell hard while covering first base early in the game and took a line drive off the left wrist in the middle innings, but replays showed him flexing his right arm immediately prior to signaling for a trainer.
Buchholz, 28, came into Saturday's game leading the league in both wins (8-0) and ERA (1.62). He held the Angels to two runs on six hits and one walk in those 6 2/3 innings before exiting the game.