In 1968, Davis was selected by the National Basketball Association's Phoenix Suns in the 10th round of the NBA Draft. He was also drafted by the American Basketball Association's New Orleans Buccaneers in a separate draft that same year. Davis opted to play for the Bucs, where he became a role player for the Babe McCarthy-coached club. He played sparingly in his first two seasons with the club. During the 1969–1970 season, however, he was selected to the West Division's All-Star team at the ABA's 3rd Annual All-Star Game despite appearing in only sixteen games overall for the season. McCarthy was his coach in the game. His nine minutes played and three points scored in the game were higher than his regular season averages that year.
The Buccaneers moved to Memphis for the 1970–71 season and became the Memphis Pros. Davis remained with the franchise and played for two seasons with the Pros. During the 1970–71 season, he played in twelve minutes per game and averaged six points per game, season bests at the time. His playing time regressed the following season and his numbers dropped accordingly. The Pros were renamed the Memphis Tams in time for the 1972–73 season, and Babe McCarthy was replaced as head coach by Bob Bass. Under Bass, Davis' playing time increased and his numbers followed suit; he set new season highs by averaging thirteen points per game and eight rebounds per game. His playing time diminished slightly in the 1973–74 season, one which saw Bass be replaced by Butch van Breda Kolff, and he averaged over five fewer points and two-and-a-half rebounds per game fewer than he did the previous year.
Davis left the Tams as a free agent and went on to join the San Diego Conquistadors for the 1974–75 season. He shot 52.8% from the field in his first season, finishing among the league's top ten in field goal percentage, while averaging nearly twelve points and six-and-a-half rebounds per game. The following season, the Conquistadors were sold to new ownership, who renamed the team the San Diego Sails. Davis was one of only three players, along with Bo Lamar and Caldwell Jones, who were retained by the Sails for the 1975–76 season. The Sails would only last 11 games before folding; Davis played in only fifty-one minutes in seven games with the Sails. These were the final games of his professional career. He retired having scored over 3,500 points and having grabbed over 2,000 rebounds in his eight-season career.
