Pressly pitched 1.2 scoreless innings while allowing two hits to earn the save Saturday against the Angels.
Pressly (2-3) allowed one earned run on one hit and one walk while striking out two to earn the win Thursday against the A's.
The Astros activated Pressly (back) from the 15-day injured list Thursday, Ari Alexander of KPRC 2 Houston reports.
Pressly (back) threw a live batting practice session Monday, Brian McTaggart of MLB.com reports.
Pressly (back) threw another bullpen session Saturday and is expected to return from the injured list when first eligible, MLB.com reports.
Pressly (back) threw a bullpen session at Minute Maid Park on Wednesday, Chandler Rome of The Athletic reports.
Astros manager Joe Espada said that Pressly (back) played catch Monday, MLB.com reports.
The Astros placed Pressly on the 15-day injured list Saturday due to a lower back strain, Matt Kawahara of the Houston Chronicle reports.
Pressly's $14 million option for 2025 vested during Friday's 3-2 win over the Rays, when he made his 45th appearance of the season, Chandler Rome of The Athletic reports.
Pressly struck out one and allowed one hit in a scoreless eighth inning to earn a hold Saturday against the Mets.