When Lance Berkman had to be helped off the field on Saturday, he feared his knee issue was serious. Today's MRI will give an official confirmation, but early word is that he's suffered a torn ACL and is done for the season.The Cardinals' Lance Berkman left Saturday's game against the Los Angeles Dodgers with a knee injury; after the game he couldn't even put weight on the leg in the clubhouse. Now, a report from Joe Strauss of the St. LouisBerkman was an incredible force at the plate for ten consecutive years though, as he posted a 148 OPS+ across the decade from 2000 to 2009. Over that period, he averaged over 30 home runs and nearly 100 walks per season, all while hitting exactly .300.Lance Berkman has hurt his knee once again, and, at 36, is thinking about retiring if the injury proves to be serious.It seemed as if St. Louis Cardinals first baseman Lance Berkman was about to be added to the growing list of baseball players whose seasons have been cut short by ACL tears. Not so fast … maybe. Cardinals general manager John Mozeliak announced Monday