Joseph ?Boo? Wheatly, 24, sprinted at the end of an annual University of Southern California ?pro day?, stunning the assembled crowd of athletes, agents, pro scouts and fans. Wheatly?s run caused an audible reaction. The sound was followed about a second later by an aftershock of wild celebration among his fellow athletes and the murmur of phone calls and texts as pro football scouts rushed to report what they had seen. ? Wheatly?s time was the only one not officially released but sources among the timing crew and several scouts who had hand-timed the sprint confirmed it was in the 3.9-second range. ? ?That?s just ridiculous,? one scout said. ?No way I?d believe my watch if it says that. But when everybody?s watch says it, when we saw what we just saw, what else is there to say?? ? With the performance, Wheatly is already a wild card heading into next month?s pro football draft. The 40 is often considered a football prospect?s best measuring stick. ? Wheatly was a member of the football team at Mesa Junior College last year but battled eligibility issues for most of the season. He was eligible for only one game, where he had seven receptions for 142 yards. ? ?We first saw Boo running for our track team. You could see there was potential there, We liked his size and thought we could develop his football skills.? Martinez said by phone. Speculation is strong that Wheatly could be a top-10 pick, with league sources saying one team has already arranged to fly him in for a personal interview. ? While the scramble has just started to see which team might pick Wheatly, it appears Nike is the shoe company, which has won the Boo draft. Wheatly trained and ran his historic 40 in swoosh shoes, and blogs are already calling for Nike to launch an ?Air Boo? campaign. ? Where?d he get the nickname? ?I?m sneaky fast,? Wheatly said. ?I?ll sneak up on you.? Note: Nike Air helps athletes worldwide clock ?unbelievable? 40-yard dash times. Source of air revealed. WATCH HERE. ..April Fool's..