Herschel Walker might be even more ambitious than Brett Favre when it comes to playing pro football at his current damn-near-geriatric age. During a recent conference call to promote his Strikeforce MMA match on Saturday night—yeah, he does that, too—the 48-year-old former college and NFL great said he'd consider making an NFL comeback today if the right position opened up. "I know I can play," Walker said. "If I continue to stay in the shape I'm in now, I know I can play when I'm 50." Please—please, please, please, please, please, please—Herschel: Don't give Brett anymore ideas! [via Fanhouse]