With the Yanks losing the double-header, here's the situation:
HOU win tonight, Angels would be 1.0 GB and the Astros would trail the Yanks by only one game.
If the Yanks lose tomorrow, providing the Astros don't collapse vs. the D-Backs tonight:
HOU win and TEX loss--one game playoff Monday, winner gets division, loser either hosts a WC game (HOU) or goes to Yankee Stadium(TEX)
HOU loss and TEX loss--Rangers win division, LA/HOU one game playoff Monday, winner goes to Yankee Stadium.
HOU win and TEX win--Rangers win division, HOU gets wild card and hosts at Minute Maid Park.
HOU loss and TEX win--Rangers win division, HOU goes to Yankee Stadium.