MLB Power Rankings 2015: Week 7 Detroit Tigers stay at No. 3

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May 17, 2015; Houston, TX, USA; Houston Astros relief pitcher Luke Gregerson (44) pitches against the Toronto Blue Jays in the top of the ninth inning at Minute Maid Park. The Astros won 4 to 2. Mandatory Credit: Thomas B. Shea-USA TODAY Sports

9. Houston Astros (25-14)

Five weeks and counting in first place.