Strasburg has struggled in May, failing to reach the fourth inning in three of his four previous starts. He gave up a solo homer to Joey Votto in the first inning - the first baseman's first homer since April 28 - and walked Brayan Pena to start the second inning.
Strasburg shrugged his shoulders after his 16th pitch, and a trainer came out to check on him. After a brief conversation, Strasburg headed for the dugout.
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