ST. LOUIS (AP) — St. Louis Cardinals first baseman Lance Berkman is expected to miss eight to 10 weeks following surgery Friday on his injured right knee. The team says the arthroscopic surgery found a partial tear in the medial meniscus, which was removed. Doctors also found cartilage tear, which was debrided. Berkman had feared possible damage to the anterior cruciate ligament. Berkman has played just 13 games this season, also missing significant time with a pulled left calf muscle. The knee injury occurred on May 19. He was a key part of the team’s championship run in 2011, hitting .301 with 31 homers and 94 RBIs in 145 games.