Dodgers catcher Yasmani Grandal struggled at the plate since he was struck by a foul ball in his left shoulder in early August. (Associated Press photo)

Yasmani Grandal told SportsNet LA reporter Alanna Rizzo that he will have surgery on his ailing left shoulder Wednesday.

.@YazmanianDVL08 set to have shoulder surgery on Wednesday. Not expected to be able to swing a bat until at least January. #Dodgers

— Alanna Rizzo (@alannarizzo) October 16, 2015

The Dodgers have not released details of Grandal’s diagnosis, or who will perform the surgery.

Grandal was chosen to the National League All-Star team in his first season with the Dodgers. The 26-year-old had a .401 on-base percentage, 14 home runs and 36 RBIs at the All-Star break.

While he continued to split time with A.J. Ellis through the end of the season, Grandal was never the same hitter after he was struck on the left shoulder by a foul ball during an early August road trip.

Afterward, Grandal collected five hits over the final two months of the season — including one hit, a single, in the National League Division Series. He finished the season with a .353 OBP and .234 batting average.

Grandal is eligible for salary arbitration.