Down 4-1 in the bottom of the ninth, Rajai Davis belted a walk-off grand slam off Sean Doolittle to lift the Tigers to a 5-4 win over the A's at Comerica Park.  Miguel Cabrera went 2-for-4 with a solo shot for Detroit, which has won two of three.  Blaine Hardy improved to 1-and-1 with the win in relief.  Doolittle fell to 1-and-3 after Scott Kazmir struck out seven in five-and-a-third innings of one-run ball.  Jed Lowrie went 2-for-4 with three RBI and Brandon Moss drove in a run as Oakland saw a four-game winning streak come to an end. 

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