Infielder Luis Guillorme began a minor-league rehab assignment Wednesday with Triple-A Sugar Land in his recovery from a right hamstring strain. Guillorme was placed on the 10-day injured list July 2, after playing in 12 games with the Astros as a utility infielder.

The Arizona Diamondbacks turn to Brandon Pfaadt, who, with his long-term contract, wouldn't seem to be a player they'd trade.