Green was selected by the
Buffalo Bills in the fifth round (107th player taken overall), one round after
Jim Braxton, who'd be a back field mate of
O. J. Simpson and part of the Bills famed "Electric Co." offense of the 1970s. Green played in ten games his rookie season, starting nine of them as the Bills struggled to an 1–13 record under coach
Harvey Johnson. After that season, Johnson was fired and
Lou Saban was named as head coach. Saban made Green the full-time starter at right tackle, as the Bills improved to 4–9–1. The next season the Bills improved to 9–5 as Green along with
Dave Foley,
Reggie McKenzie,
Bruce Jarvis, and
Joe Delamielleure formed the line that helped Simpson rush for 2,003 yards in a season. In 1974, Green only started 10 games, but he recorded his only pass reception, a one yarder from quarterback
Joe Ferguson in a 24–16 loss to the
Miami Dolphins. 1975 would be Green's last as a full-time starter. He started all 14 games that year, eleven in 1976. He played for the
Philadelphia Eagles in 1977 as a back-up, and spent 1978 seeing spot duty for the
Detroit Lions. He retired after that season. ==Post career and death==