Nippon Ham Fighters outfielder Terrmel Sledge's season is in doubt after he was diagnosed with a severe knee injury.
Sledge was deactivated on June 16 with pain in his left knee. Fighters officials said an examination in California revealed severe damage to the cartilage where the left thigh bone meets the knee cap.
Despite batting .232 with five homers in 47 games this season, Sledge was voted to his first All-Star roster by vote of the fans, who filled eight of 12 Pacific League roster spots with Fighters players.
The 35-year-old, who played in the majors for the Montreal Expos, Washington Nationals and San Diego Padres, is in his fifth year in Japan and his third with the Fighters after spending the last two seasons in Yokohama.
The left-handed hitter has a career .263 average here with 96 home runs.