Detroit Lions wide receiver Calvin Johnson recently had surgeries on his right knee and a finger.
Lions general manager Martin Mayhew told reporters Wednesday that Johnson's knee surgery was a relatively minor arthroscopic procedure.
Johnson missed two games last season because of his knee ailment. He finished with 1,492 yards receiving and 12 touchdowns, earning a spot on The Associated Press NFL All-Pro team for a third straight year.
Johnson pulled out of the Pro Bowl because of his injuries and was replaced by Chicago's Alshon Jeffery.