Let's hear it for the old guys! 53-year-old Tim Karaker showed up at Fire Extreme in Bourbonnais, Ill. last week and was asked to fight. He said yes, and knocked out 21-year-old Brandon Frey. Watch his MMA debut here, and skip to the 2:30 mark for the KO. UFC fighter Stephan Bonnar narrates and lets a few NSFW words slip.