The defending AL West champions also designated outfielder Marc Krauss for assignment and selected the contract of outfielder Alfredo Marte from Triple-A Salt Lake.
Los Angeles Angels left fielder Collin Cowgill was struck in the face by a ball after he squared to bunt in Saturday night’s game at Texas.
It was Trout’s second career walkoff hit, both of them homers.
Collin Cowgill’s three-run homer off Tommy Milone in the fourth accounted for all of the Angels’ runs.
Joe Blanton allowed one infield single over five scoreless innings and Collin Cowgill hit a three-run homer and a Los Angeles Angels split-squad beat the Texas Rangers 12-1 Wednesday.
Jered Weaver chalked up another win in Cleveland and Josh Hamilton hit a three-run homer as the Los Angeles Angels ended their four-game losing streak with a 5-2 victory over the Indians, who dropped their fifth in a row on Friday night.
The Los Angeles Angels acquired outfielder Collin Cowgill from the New York Mets for minor leaguer Kyle Johnson on Tuesday.