Seattle, WA -- (Sports Network) - Seattle Mariners designated hitter/outfielder Ken Griffey Jr. underwent a procedure on his left knee on Monday, the club announced.

Griffey had arthroscopic surgery to remove a bone spur that was performed by Dr. Timothy Kremchek in Cincinnati, Ohio.

The 39-year-old returned to Seattle last season after spending the previous nine seasons with Cincinnati and hit .214 with 19 homers and 57 runs batted in over 117 games.

He was originally selected with the first overall pick by Seattle in the 1987 amateur draft and spent 11 seasons with the Mariners before getting traded to the Reds. His 630 career homers rank him fifth on Major League Baseball's all-time list.

The future Hall of Famer is expected to need 4-to-6 weeks of recovery time.