NFLFormer USC, NFL RB Joe McKnight through the yearsIn this 2009 file photo, USC running back Joe McKnight breaks through the line against Oregon State at the Los Angeles Memorial Coliseum.Robert Hanashiro, USATSouthern California Trojans running back Joe McKnight (4) evades a tackle from Arizona State Sun Devils linebacker Robert James (29) in the first half at Sun Devil Stadium during a game in 2007.Gary A. Vasquez-US PRESSWIRE, US PRESSWIREUniversity of Southern California Trojans tailback Joe McKnight (4) runs upfield against the Illinois Fightng Illini during the Rose Bowl in 2008.Kirby Lee-US PRESSWIRE, US PRESSWIRESouthern California Trojans tailback Joe McKnight (4) is pursued by Ohio State Buckeyes defensive lineman Rob Rose (9) in the fourth quarter at Ohio Stadium. USC defeated Ohio State 18-15.Kirby Lee-US PRESSWIRE, US PRESSWIRESouthern California Trojans tailback Joe McKnight (4) reacts after scoring on a 2-point conversion pass in the fourth quarter against the Ohio State Buckeyes at Ohio Stadium in 2009.Kirby Lee-US PRESSWIRE, US PRESSWIREIn this Nov. 17, 2011, file photo, New York Jets running back Joe McKnight (25) runs during an NFL football game against the Denver Broncos.Jack Dempsey, APNew York Jets kick returner Joe McKnight (25) runs a kickoff back for a first quarter touchdown against the Baltimore Ravens at M&T Bank Stadium in 2011.Mitch Stringer-US PRESSWIRE, US PRESSWIREIn this 2011 file photo, New York Jets running back Joe McKnight (25) returns a kickoff against the Buffalo Bills.Robert Deutsch, USA TODAY SportsKansas City Chiefs running back Joe McKnight (22) is tackled by Miami Dolphins linebacker Jelani Jenkins (53) during the first half at Sun Life Stadium 2014.Steve Mitchell-USA TODAY SportsKansas City Chiefs running back Joe McKnight (22) scores a touchdown against the Miami Dolphins in the game at Sun Life Stadium in 2014.Brad Barr-USA TODAY Sports