Grandal, 26, reportedly played with the shoulder injury throughout the end of the season and into the playoffs.
The 2015 All-Star batted just .067 throughout his final 30 regular season games, and went 1-for-10 in five postseason contests.
Before his injury, Grandal was regarded as one of the top catchers in the Majors, as he batted .295 with 15 home runs through 84 games.
“I’m looking forward to not having to deal with this anymore,” Grandal said.
Grandal finished the 2015 campaign batting .234 with 16 home runs and 47 RBIs for the National League West Champions.
- Kayla Lombardo