shawn dwayne marion (born may 7, 1978) is an american former professional basketball player who played 16 seasons in the national basketball association (nba). marion finished his career as a four-time nba all-star and a one-time nba champion, helping the dallas mavericks win their maiden title in 2011. nicknamed "the matrix" by former nba player kenny smith during the preseason of his rookie year, he was widely regarded as one of the most versatile players in the league because of his athleticism and ability to play and defend many positions. he was also known for his unorthodox shooting form.