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The winner of the Rangers and Athletics game will be the AL West winner, and the other will be in a wild card spot.
If the Orioles win tonight and the Yankees win tonight, the O's will play the loser of this Texas-Oakland game at Camden Yards on Friday.
If the Orioles win tonight and the Yankees lose tonight, the O's will play a tiebreaker on Thursday, with the loser of that Thursday game hosting the loser of Texas-Oakland on Friday. The winner of the tiebreaker would then play the Tigers in the ALDS.
If the Orioles lose tonight, they will play the loser of this Texas-Oakland game on the road on Friday.
Texas will be starting Yu Darvish in whatever is the first postseason game they play.