MLB Power Rankings: Astros Take the Reins

May 3, 2015; St. Louis, MO, USA; St. Louis Cardinals second baseman Kolten Wong (16) celebrates with third base coach Jose Oquendo (11) after hitting a walk-off solo home run off of Pittsburgh Pirates relief pitcher Radhames Liz (not pictured) during the fourteenth inning at Busch Stadium. The Cardinals defeated the Pirates 3-2. Mandatory Credit: Jeff Curry-USA TODAY Sports