Diaz (groin) could join the Astros on Saturday, Brian McTaggart of MLB.com reports.
Diaz has not played for the Astros since injuring his groin Opening Day, but it appears he is close to returning to action. It remains to be seen what role Diaz will fill when is he activated, but he could serve as Houston's primary third baseman until Alex Bregman (hamstring) is ready to get back on the field.