Astros manager Dusty Baker said Pressly isn't available for Saturday's game against the Angels due to an illness, Brian McTaggart of MLB.com reports.
Pressly also wasn't available Friday after being "under the weather," according to Baker. The right-hander could be ready to pitch in Sunday's series finale against the White Sox, but that's up in the air at the moment. Rafael Montero and Hector Neris have picked up saves for Houston in the last two games, and with Neris pitching 1.1 innings Saturday, Montero looks like the better bet to get the ball Sunday if Pressly can't play.