In his pro career, Davis played in 81 games, catching 207 receptions for 3,000 yards and 14 touchdowns.
His career effectively ended on October 10, 1993, in a game against the Philadelphia Eagles. While planting his feet to catch a pass, his cleats got stuck in the Astroturf at Veterans Stadium. The force of being pulled back to the ground was so severe that it completely severed both patella tendons. Doctors later found his kneecaps had been pushed all the way into his thighs. He spent several months in a wheelchair, with his legs encased in casts from thigh to ankle. After spending the entire 1994 season in rehab, he attempted a comeback with the Indianapolis Colts in 1995, but did not appear in a game.
In October 2009, Davis became the wide receivers coach for the San Francisco 49ers under Mike Singletary. Davis also owns a barbershop franchise, Big League Barbers, located in Riverwoods, Illinois.