Julius Winfield Erving II (born February 22, 1950), commonly known by the nickname Dr. J, is an American retired basketball player who helped popularize a modern style of play that emphasizes leaping and playing above the rim in his career at the ABA and the NBA. Erving helped legitimize the American Basketball Association (ABA)[1] and was the best-known player in that league when it merged into the National Basketball Association (NBA) after the 1975–76 season.

Erving won three championships, four Most Valuable Player Awards, and three scoring titles with the ABA's Virginia Squires and New York Nets (now the NBA's Brooklyn Nets) and the NBA's Philadelphia 76ers. He is the eighth-highest scorer in ABA/NBA history with 30,026 points (NBA and ABA combined). He was well known for slam dunking from the free throw line in slam dunk contests and was the only player voted Most Valuable Player in both the ABA and the NBA. The basketball slang of being posterized was first coined to describe his moves.