McCullers has taken an aggressive approach during the shut down and is "... probably ahead of everybody ...," manager Dusty Baker told Chandler Rome of the Houston Chronicle.
Though McCullers was advocating against it, he was probably facing an innings limit during a full season, but with the 60-game season, he'll be under no such restrictions. Even before the surgery, McCullers carried plenty of injury risk, but this is one hurdle removed at least.