Arizona manager Torey Lovullo said following Friday night's game that Herrera (head) "got through his testing just fine," MLB.com reports.
Herrera was accidentally hit on the top of his helmet by Kyle Tucker's backswing and removed from Friday's game. The manager added that Herrera is penciled into Saturday's lineup. According to Lovullo, the catcher lobbied to remain in the game, and that his removal was strictly for precautionary reasons.