The Astros optioned Ullola to Triple-A Sugar Land on Wednesday, Matt Kawahara of the Houston Chronicle reports.
The Astros selected Pecko's contract from Triple-A Sugar Land on Wednesday, Matt Kawahara of the Houston Chronicle reports.
Varsho is absent from the lineup for Wednesday's game versus the Angels.
Diaz is not in the lineup for Wednesday's contest versus the Angels.
The Astros transferred Matthews (knee) from the 10-day injured list to the 60-day IL on Wednesday.
Meckler went 1-for-4 with a stolen base and a run scored in Tuesday's 3-1 win over the Astros.
Smith went 1-for-3 with a solo home run in Tuesday's 3-1 loss to the Angels.
Klassen (2-1) allowed one hit and three walks while striking out seven over seven scoreless innings to earn the win over the Astros on Tuesday.
Javier (1-4) allowed two runs on five hits and a walk while striking out five over four innings to take the loss versus the Angels on Tuesday.
Joyce struck out two batters in a perfect inning to earn the save Tuesday in a 3-1 win over the Astros.
