'You're the guy with the ball to the crotch': The inside story behind the funniest baseball card ever made

"Keith Comstock played on four major league clubs as a journeyman reliever, but his professional career is most often remembered for one thing: a ball to the crotch. Thirty years ago -- in what otherwise would have been a forgotten minor league set -- Comstock appeared on one of the most memorable baseball cards ever made. Here's the story of how it came together, in his words."