Santander revealed Wednesday that shoulder pain returned in January when he started hitting again after taking time off to rest, per Sportsnet's Shi Davidi. An MRI then confirmed the torn labrum, which was made public on the first day of spring training.
The 31-year-old missed most of last season rehabbing the same shoulder, appearing in just 54 regular-season games and five more in the post-season. He is entering the second year of a five-year, $92.5-million contract with the Blue Jays.