If life is a ball game, Mike Pesca is our umpire, calling the shots as he sees them. Pesca is NPR's sports correspondent and WEEKEND EDITION's guide to the intersections between sports and life, and he joins us now. Hey, Mike.
MIKE PESCA, BYLINE: Hello.
MARTIN: OK. So, this week baseball in the headlines and steroids - back in court again. Give us a rundown of what's happened.
The prosecution at the perjury trial of baseball great Roger Clemens suffered another major setback Wednesday. One of its key witnesses, pitcher Andy Pettitte, conceded that he may have misunderstood his former teammate as saying he used human growth hormone (HGH).
Clemens is charged with lying to Congress when he testified before a House committee that he had never used performance-enhancing drugs.