The balance of power in the American League changed Friday night, as the Los Angeles Angels won the Zack Greinke sweepstakes.
Not only did the Angels add Greinke to a starting rotation that already featured Jered Weaver, C.J. Wilson and Dan Haren, but they also prevented league rivals—notably the Texas Rangers—from making a significant addition to their rosters. The Angels were already a front-runner for an AL Wild Card playoff spot, but getting Greinke all but clinches one and makes them a threat for the AL West title.
Another team that likely clinched a spot in the postseason with a big trade this week was the Detroit Tigers. Getting Omar Infante from the Miami Marlins fills a season-long hole at second base while Anibal Sanchez gives Detroit depth in its starting rotation. The Tigers have lost three of four since the trade, but they still look like the favorite in the AL Central, if not for a wild-card spot.
Baseball's trade deadline is just days away as of this writing. Several other playoff contenders could solidify their chances at a postseason bid with the right deal. Here are four teams that should make plans for October if they can pull off a big trade.