Ray Allen was drafted by the Minnesota Timberwolves with the fifth pick of the 1996 NBA Draft. Immediately after his selection, Allen and Andrew Lang were traded to the Milwaukee Bucks for the rights to fourth pick Stephon Marbury.
Allen was a member of the NBA's All-Rookie 2nd Team in 1996. His most successful season with the Bucks occurred during the 2000-01 season as he won the 3-point shootout during All-Star Weekend, was selected to the All-NBA Third Team, and led the Bucks to the Eastern Conference Finals, where they lost in seven games to the Philadelphia 76ers.
Allen remained with the Bucks midway through the 2002-03 season, when he was dealt to the Sonics. He was named to the All-NBA 2nd Team and led the Sonics to the Conference Semifinals in 2005. After the 2004-05 season, Allen signed a 5-year, $80 million contract extension. In the 2006-07 regular season, he averaged a career-high 26.4 points per game while adding 4.5 rebounds and 4.1 assists per game.
On March 12, 2006, Allen became the 97th player in NBA history to score 15,000 points. On April 7, 2006, Allen moved into second place on the NBA's list of all-time 3-point field goals made.
The Sonics traded Allen to the Bost Celtics,where he passed 17,000 points for his career Allen was named by NBA Commissioner David Stern for the 2008 NBA All-Star Game in New Orleans. While LeBron James was given the All-Star MVP Award, many analysts, including the TNT commentators of the game, felt it should have gone to Allen, who scored 14 points in a stretch of 2 minutes and 30 seconds in the fourth quarter to seal the win for the East team.
Ray was named as the All-Star replacement again during the 2009 All Star game. This marks Allen's ninth time on the All-Star team and the second straight year he has made it alongside teammates Kevin Garnett and Paul Pierce.
Allen was honored as the 3rd best of the 20 greatest players in franchise history during Milwaukee's 40th Anniversary Team Celebration.
In 2008, Ray Allen led his Boston Celtics to their 17th World Championship. Ray Allen Averaged 15.6 points per game, 3.8 rebounds per game, and 2.7 assist per game during the 2007-2008 Playoff championship run.