Brown was drafted in the first round (second overall) of the 1964 NFL draft by the Philadelphia Eagles.[1] The contract he signed with the team had a $100,000 signing bonus. After his rookie season in 1964, Brown was named the NFL Rookie of the Year. He was named to the Pro Bowl in 1965 and 1966 during his five-season career with the Eagles.[2]
After asking for a trade from the Eagles, Brown was sent to the Los Angeles Rams in a five-player trade on May 12, 1969. The Eagles traded Brown, along with cornerback Jim Nettles, to the Rams in exchange for offensive tackle Joe Carollo, guard Don Chuy and defensive back Irv Cross.[2]
Brown was traded by the Rams to the Oakland Raiders, along with two draft picks, in exchange for offensive tackle Harry Schuh and cornerback Kent McCloughan on June 23, 1971. During the 1971 season, he was one of five eventual Pro Football Hall Of Fame offensive linemen on the field for Oakland at the same time (with Art Shell, Gene Upshaw, Jim Otto and Ron Mix).[3]
Brown was named All-Pro during five of his ten seasons with the Eagles, Rams and Oakland Raiders. Named the NFL/NFC offensive lineman of the year by the NFLPA three times (1968-1970), Brown was also chosen to play in six Pro Bowls, three with the Eagles, two with the Rams, and once with the Raiders.[1]