Nevada RB Stefphon Jefferson among Titans’ undrafted signees

Running back Stefphon Jefferson, who finished second in the NCAA’s Football Bowl Subdivision in rushing yards and carries in 2012, is among the 15 undrafted rookie free agents with whom the Titans have reached contract agreements, the club said Thursday. The 5-10, 213 Jefferson racked up 1,883 yards on 375 carries for Nevada in 2012.…