McCullers (forearm) threw a bullpen session in Seattle on Saturday, reportedly hitting 90 mph twice, Brian McTaggart of MLB.com reports.
McCullers has been out since February, as he's been nursing an injured right forearm, so Saturday's session is certainly encouraging. The 29-year-old will continue to slowly ramp up his activity over the next few weeks, including an inevitable rehab assignment, which will likely be multiple starts. That said, once healthy, McCullers will help fill the void left in the Astros' rotation by Luis Garcia's season-ending elbow injury.