According to Reddit, there's an incredibly thin chance the 'Stros miss the playoffs.
Astros lose out (4 games)
Mariners win out (3 games)
Boston wins out (4 games) WC #2
Yankees win out (4 games) WC #1
Mariners win (163 play-in game) AL West.
In the chaosball scenario, the Sox are 3-3 against the Mariners and outscored them 32-29. They actually won the series in Seattle, Mariners won the series in Chicago.
ROOT FOR CHAOS.