The best-case scenario would have Lance Berkman back with the Cardinals after the All-Star break. St. Louis general manager John Mozeliak said that Berkman will be sidelined at least six to eight weeks with significant cartilage damage on both sides of his right knee, but an MRI did not appear to show ligament damage. Hurt making a routine play, Berkman suspects a ligament injury that would require more significant surgery and end his season -- and perhaps his career. Berkman will undergo an arthroscopic procedure later this week in Vail, Colorado. "At a minimum, it's a scope to repair it," Mozeliak said. "We're hopeful, we're optimistic that's what it is. But we'll need a few days before we determine anything. Certainly, he knows there are uncertain times ahead of him."