Schwarber immediately called Cubs president Theo Epstein and lobbied for the opportunity to try a comeback.
Epstein and the medical staff approved, so Schwarber jetted off to the Arizona Fall League for a crash course of cage work.
Schwarber estimates he saw 1,300 pitches from a pitching machine, including breaking balls on the nastiest setting available, "just to train my eyes again." Schwarber took so many swings that blisters developed on his hands, but he fought through to log six at-bats in a pair of AFL games, watching from the bench as the Cubs clinched the NL pennant on Saturday night, then going 1-for-3 on Monday with Epstein watching via a closed-circuit television feed.
On Tuesday morning, the Cubs added him to their World Series roster.
"But the process was a long time.