Oakland lost center fielder Coco Crisp to a strained left hamstring and outfielder Chris Young to a strained left quadriceps.

NPR: Moss Hits 2nd HR In 19th, A's Outlast Angels 10-8

The Yankees need a right-handed outfielder, plus a left-handed designated hitter.

WSJ: Swisher, Ibanez Are Latest Yankees to Flee

Wells' trade to the Yankees was finalized Tuesday, when New York dealt a pair of minor leaguers to the Angels: outfielder Exircado Cayones and left-hander Kramer Sneed.

WSJ: Yankees complete trade for Vernon Wells

Rick Ankiel's two-run homer off rookie Seth Maness (3-0) tied it in the top of the seventh and was his first against the team that converted the former left-handed pitcher to an outfielder in 2005.

WSJ: Cardinals get to Mets bullpen in 4-2 win

After a pitch from Greinke struck Padres outfielder Carlos Quentin on his left arm, Quentin charged the mound and barreled into the Dodgers ace, sparking a melee that is sure to result in player suspensions.

WSJ: Zack Greinke Breaks Collarbone in Brawl

Gardner, 29 years old, is a superlative defensive outfielder who has been, to some degree, wasted in left field since the arrival of Granderson in 2010.

WSJ: In the Center of Yankee Change

Brennan Boesch, trying to win a spot as a backup outfielder, was a late scratch from the Yankees lineup because of sore left ribs.

WSJ: Cano's 2 RBIs help Yankees top Twins 9-7

The outfielder is in the final year of his contract, and heading into free agency as a left fielder rather than a center fielder could hurt his value especially if he struggles to learn the new position.

WSJ: In the Center of Yankee Change