Aledmys Diaz and Pedro Baez began rehab assignments on Thursday, the Astros announced.
Diaz started his rehab assignment at the Astros complex in West Palm Beach, FL after fracturing his left hand in a game against the Toronto Blue Jays on June 5. He's batting .278 with three home runs and 18 RBI in 34 games this season.
Baez, who the Astros signed to a two-year, $12.5 million contract in January, has yet to appear in a game in 2021. He tested positive for COVID-19 during spring training and he then injured his shoulder during his ramp-up for the season.
He made his first rehab appearance for Low-A Fayetteville on Thursday and allowed one hit in a scoreless first inning against Salem, throwing 11 pitches, eight for strikes.
The Astros have not given timelines for when either player will join the Astros.