Celtics center Theis undergoes knee surgery

Boston Celtics center Daniel Theis had an arthroscopic procedure performed on his left knee, the team announced on Wednesday, but he is expected to be ready for training camp.

Celtics center Theis undergoes knee surgery
Boston Celtics center Daniel Theis had an arthroscopic procedure performed on his left knee, the team announced on Wednesday, but he is expected to be ready for training camp.