Davis was drafted by the Dolphins as their 1st-round pick in 2009. He stayed in Miami for 3 seasons until being traded to the Colts, where he then stayed for 6 seasons - being named to 2 Pro Bowls during his time there. Davis then finished his career on the Bills.
According to reports, Davis was found unresponsive in his home by his grandmother, and the police say that no foul play is suspected.