Marty Byrnes (born April 30, 1956 in Syracuse, New York) was selected by the Dallas Mavericks in the expansion draft, from the Los Angeles Lakers, prior to the team's inaugural season in 1980-1981.
Byrnes attended Syracuse University where he became a starter as a sophomore averaging 13 points and 7.2 rebounds per game primarily at the center position. He was able to move back to his natural forward position the next season when the school recruited a big man, Roosevelt Bouie, who would go on to be drafted by Dallas in their inaugural draft in 1980.
As a junior in 1976-77, Byrnes was selected captain of the team and averaged 10.6 ppg and 7.6 rpg.
His senior season saw Byrnes elevate his game playing alongside future NBA players such as Louis Orr and Dan Schayes under the direction of head coach Jim Boeheim and assistant coach Rick Pitino.
Averaging 16.3 points per game, he led Syracuse to a win in the innaugural Carrier Classic defeating Magic Johnson and Michigan Stage 75-67 in the championship game.
The season ended in a disappointing fashion however with the Orangemen losing in the first round of both the ECAC post-season tournament and the NCAA tournament.
After graduation, Byrnes was a first round draft choice of the Phoenix Suns in the 1978 draft. During his rookie season the Suns traded Byrnes, Ron Lee, two first-round draft choices and cash to New Orleans for Leonard "Truck" Robinson.
Byrnes played the 1979-80 season with the Lakers, appearing in 32 games as Los Angeles won the NBA Championship that season. Following the season, LA left the 6'7 forward exposed in the league expansion draft and he was taken by the Mavericks.
The 1980-1981 season, his only season with the Mavericks, was the best of his brief NBA career. Byrnes played in 72 games and averaged 7.8 points per game. He also recorded a career high 17 blocks that season and had Dallas' highest three-point field goal percentage for the year hitting 9 of his 20 attempts for a .450 average. He has the distinction of being the leading scorer with 24 points, in the Mavs' final game of their charter season.
He played one more season in the NBA with the Indiana Pacers in 1982-1983.
Following his NBA career, Byrnes went on to play for four teams over four seasons in the Italian Professional League posting the highest numbers of his pro career in 1984 with 22.2 points and 6.8 rebounds per game.
Byrnes is still in Syracuse University's top 40 all-time leading scorers with 1,159 points in his career. He was named to the school's all-century team in 2000.