The Pirates reassigned Perez to minor-league camp Sunday.
Perez signed a minor-league contract with the Pirates on Friday.
Perez was released by the Astros on Friday, Chandler Rome of The Athletic reports.
Houston outrighted Perez to Triple-A Sugar Land on Friday, Chandler Rome of The Athletic reports.
The Astros designated Perez for assignment Tuesday, Chandler Rome of The Athletic reports.
Perez was promoted to Triple-A Sugar Land by the Astros on Tuesday, Chandler Rome of the Houston Chronicle reports.
Perez (oblique) was activated from the 7-day injured list Tuesday, Chandler Rome of the Houston Chronicle reports.
Perez is on the 7-day injured list at Double-A Corpus Christi with an undisclosed injury.
The Astros optioned Perez to Triple-A Sugar Land on Monday, Brian McTaggart of MLB.com reports.
Perez was called up by the Astros on Friday, Chandler Rome of the Houston Chronicle reports.