Dickerson originally suffered the injury in spring training and had another setback this week after having four at-bats in an extended spring training game, reports Nathan Ruiz of MLB.com. Ruiz says both the team and Dickerson are considering surgery.
Manager Andy Green told reporters he was not optimistic that Dickerson would be back in 2017.
Dickerson made a positive impression last year with a .257/.333/.455 slash line and 10 homers in 84 games.
-- Doug Mittler