Houston Astros' Jason Castro doubles in a pair of runs against the Seattle Mariners in the third inning of a baseball game Wednesday, April 23, 2014, in Seattle. (AP Photo/Elaine Thompson)
Houston Astros' Dexter Fowler, right, slides into a tag for an out by Seattle Mariners shortstop Brad Miller in the first inning of a baseball game on Wednesday, April 23, 2014, in Seattle. (AP Photo/Elaine Thompson)
Seattle Mariners fans cheer as Houston Astros closing pitcher Josh Fields heads off the field after giving up a walk-off home run to Seattle Mariners' Kyle Seager in the ninth inning of a baseball game Wednesday, April 23, 2014, in Seattle. The Mariners won 5-3. (AP Photo/Elaine Thompson)
Seattle Mariners' Kyle Seager tosses his batting helmet as he heads home on his three-run walk-off home run against the Houston Astros in the ninth inning of a baseball game Wednesday, April 23, 2014, in Seattle. The Mariners won 5-3. (AP Photo/Elaine Thompson)
Houston Astros starting pitcher Jarred Cosart throws against the Seattle Mariners in the second inning of a baseball game on Wednesday, April 23, 2014, in Seattle. (AP Photo/Elaine Thompson)
Fans sit near Seattle Mariners right fielder Nick Franklin in the second inning of a baseball game against the Houston Astros, Wednesday, April 23, 2014, in Seattle. (AP Photo/Elaine Thompson)
Seattle Mariners center fielder Abraham Almonte misses a fly ball hit by Houston Astros' Jonathan Villar in the seventh inning of a baseball game on Wednesday, April 23, 2014, in Seattle. The ball bounced into the stands for a ground-rule double (AP Photo/Elaine Thompson)
Seattle Mariners' Kyle Seager tosses his batting helmet as he heads home on his three-run walk-off home run against the Houston Astros in the ninth inning of a baseball game Wednesday, April 23, 2014, in Seattle. The Mariners won 5-3. (AP Photo/Elaine Thompson)
Seattle Mariners' Kyle Seager, right, hits a three-run walkoff home run as Houston Astros catcher Jason Castro looks on in the ninth inning of a baseball game on Wednesday, April 23, 2014, in Seattle. The Mariners won 5-3. (AP Photo/Elaine Thompson)