Luck and the Mariners resting the back end of their bullpen. Astros will take what they can take at this point.
Having to use their top relievers 3 days in a row caught up to them. But that doesn’t happen if Astro pitching doesn’t keep the games close in the first 3. So really not luck at all.
That pitch, that was not a good pitch. If they had only put the full shift on and thrown everything 6 inches outside that never would have happened.