Another MLB season tees off on Sunday as the Rangers and Astros face off in Houston. Will Bryce Harper and Stephen Strasburg lead the Nationals to the World Series? Can the Yankees overcome injuries to Alex Rodriguez, Mark Teixeira and Derek Jeter? Will Josh Hamilton sink or swim in Anaheim? We'll let baseball fans ponder these difficult questions. In the meantime, check out SwimDaily's collection of baseball players and their wives/girlfriends who have appeared in the SI Swimsuit Issue.