Some info on Parrish Cox per Wikipedia
2010 NFL Draft
Cox was considered one the best cornerbacks available in the 2010 NFL Draft.[3][4] His draft stock dropped after a slow 40-yard dash at the NFL combine, but he was able to improve his workout numbers at OSU's Pro Day.
Denver Broncos
Cox was drafted by the Denver Broncos in the fifth round of the 2010 NFL Draft. He played one year for the team and was released on September 3, 2011.
San Francisco 49ers
Cox signed with the San Francisco 49ers for a two-year deal on March 13, 2012. Cox was released by the 49ers on November 12, 2013 to make room on the active roster for returning ILB Nick Moody.
Off the field troubles
In August 2009, Cox was arrested for driving with a suspended license.
He was also suspended from the Cotton Bowl in his senior season by head coach Mike Gundy for violating the team curfew rule.
Cox was arrested on December 9, 2010, for felonious sexual assault and taken to a Douglas County jail. He was released on December 10 on a $50,000 bond. His sexual assault charges were classified as class three and class four felonies which carry a sentence of two years to life in prison. He faced a possible sentence of ten years to life if convicted. However, on March 2, 2012, Cox was found not guilty of sexual assault charges in Douglas County, Colorado criminal court.