Luke Gregerson pitched a clean ninth inning against the A's on Sunday, notching his fourth save of the season.
Adam Wojciechowki allowed five runs in four innings during Sunday's win over the A's.
Astros prospect Colin Moran went 5-for-8 Saturday with eight RBI in a doubleheader for Double-A Corpus Christi.
Astros prospect Carlos Correa had a productive night Saturday, going 3-for-5 with a homer and a stolen base for Double-A Corpus Christi in the second game of a doubleheader.
Astros prospect Chris Devenski tossed 6 1/3 no-hit innings Saturday for Double-A Corpus Christi.
Brett Oberholtzer (blister) could begin a rehab assignment this week.
Jake Marisnick (quad) is expected to sit out again on Sunday.
Jose Altuve went 2-for-5 with a three-run homer Saturday in the Astros' 9-3 rout of the A's.
Scott Feldman limited the A's to three runs over 6 2/3 innings Saturday to earn his second win.
Evan Gattis is not in the Astros starting lineup on Saturday.
Robbie Grossman delivered a two-run single in the top of the 11th to help the Astros beat the A's 5-4 on Friday.
Dallas Keuchel was denied a victory after throwing nine scoreless innings Frida against the A's.
Luke Gregerson blew his first save Friday after giving up two runs in the 10th against the A's.
Chad Qualls retired the only batter he faced Friday to pick up his second save against the A's.
Jake Marisnick was scratched from the Astros starting lineup on Friday due to right leg discomfort.