Diamondbacks pitcher David Hernandez (elbow) began a rehab assignment with high Class A Visalia Saturday, tossing a scoreless inning and striking out one.
Manager Chip Hale said Sunday that Hernandez's fastball ranged from 93 to 95 mph in the rehab debut, the Arizona Republic reports. The pitcher is slated to make three more appearances in the minors, including pitching on consecutive days, before being reassessed. He hasn't pitched in the majors since 2013 while recovering from Tommy John surgery.