"Whatever you do, I wouldn't bring up Crash Davis," warns Matt DeMargel, the Bulls' director of media relations. Twenty years after the release of "Bull Durham," the team roster happens to include a 39-year-old player, DiFelice, who bears some similarities to the Kevin Costner character. Plays for Bulls. Check. A catcher. Check. Nearing end of career. Check. Mentors young pitching prospect. Check.