Bob Nightengale of USA Today writes that Mariners manager Don Wakamatsu is clearly on the hot seat. "The Mariners are playing like a team trying to get its manager fired. Wakamatsu's future clearly in doubt," Nightengale wrote on his Twitter page. Seattle has struggled again this season with a record of 39-67 through Sunday's action. http://twitter.com/BNightengale/status/20088250892
