Giants' Alex Wood goes on IL, injured hamstring fielding bunt

San Francisco Giants left-hander Alex Wood has been placed on the 15-day injured list after he left Tuesday's start early witha strained left hamstring.

In the third inning, Wood planted both feet awkwardly after he came off the mound to field Miami Marlins third baseman Jean Segura's bunt near the third-base line. He threw out Segura by a step but limped around the mound, prompting immediate attention from an athletic trainer and Giants manager Gabe Kapler.

"When I went to field the bunt, my cleat just stuck so hard," Wood said. "It's frustrating. As far as hamstrings, it's not that bad. We'll see how I wake up tomorrow and go from there."

Wood was replaced by Jakob Junis, who took the loss as the Giants dropped their fifth straight game, losing4-2.

Wood, 32, has not completed five innings in any of his three starts this season. He is 0-0 with a 1.80 ERA.

In a corresponding move, the Giants called up right-hander Tristan Beck from Triple-A Sacramento. Beck, 26, has yet to pitch in the majors, spending the past five seasons in the minors.He is 1-1 with a 3.38 ERA in three starts at Sacramento this season.

The Giants also acquired outfielder Cal Stevenson from the Oakland Athletics for cash considerations Wednesday.

San Francisco optioned Stevenson to Triple-A Sacramento and designated left-hander Sam Long for assignment. The Athletics had designated Stevenson, 26, for assignment Friday.

Stevenson made his MLB debut last season and batted .167 (10-for-60) with one RBI in 23 games for Oakland.

Information from The Associated Press was used in this report.