KEVIN COSTNER: `I'M A JERK'

KEVIN COSTNER: `I'M A JERK'

LOS ANGELES (Wireless Flash) -- When Kevin Costner was filming his new baseball flick, "For Love Of The Game," he wasn't exactly a hit with the extras. According to "E! Online," Costner claims he encouraged the extras sitting in the stadium to heckle him like they would a real baseball player. However, when one of the phoney fans yelled something Costner didn't like, he got so ticked off that he left the mound in a huff, walked toward the stands and cursed out the heckling extra. That's when a hush came over the entire cast and crew. Costner claims he immediately thought, "What a jerk you are, Kevin," because the film shoot had been a blast up to this point and his flare-up was all the extras would remember.