AL:
Texas Rangers (83-67) at New York Yankees (92-60)
Tampa Bay Rays (90-61) at Minnesota Twins (92-60)

NL:
San Diego Padres (85-66) at Philadelphia Phillies (92-61)
Atlanta Braves (86-67) at Cincinnati Reds (86-67)

I think all of the matchups minus the Phillies Padres matchup could actually end up being close. The Rangers-Yankees series would of course depend on the health of Josh Hamilton.