Shooting legend and future hall-of-famer Ray Allen has announced his retirement from the #NBA after 18 seasons in the league as a member of the Milwaukee Bucks, Seattle Supersonics, Boston #Celtics and Miami #Heat.

Ray Allen's official announcement on the Players' Tribune

Allen made his decision official on Tuesday through the website, the Players' Tribune, in which he wrote an open letter to his younger self that explained what he had to go through during his college and NBA tenure, and how he was finally ready to call it quits:

"I write this to you today as a 41-year-old man who is retiring from the game.

I write to you as a man who is completely at peace with himself."

Allen hasn't played a regular season game since the 2013-14 season when he was a member of the Miami Heat, a team that helped Allen to his second career NBA Finals victory. There was talk the Cleveland Cavaliers and a few other teams might signAllen back in July, although nothing came of it.

Ray Allen's career highlights and legacy

His first championship came with the Boston Celtics after he joined the team prior to the 2007-08 season to start the trend of "big three's" in the NBA. Allen was a veteran in search of a championship before moving to Beantown, but he was able to bring a title home thanks to help from Kevin Garnett and Paul Pierce.

The Celtics would return to the Finals in 2010, however Allen fell short against the Los Angeles Lakers.

The 10-time NBA All-Star leaves the NBA as the all-time leader in three-pointers made (2,973) and attempted (7,429),and Allen also notched a victory in the three-point shootout back in 2001. You can certainly argue that the UConn product is one of the greatest shooters in NBA history, if not the greatest.

Allen wasn't just a legendary shooter who hit several clutch shots in big spots, he was also a prolific scorer with eight straight seasons of 21 points or more during his career.In fact, Allen averaged double-digit points per game in every season with the exception of his final one in Miami and finishes ranked 27th in NBA history in total points (24,505).

As if his accomplishments on the basketball court weren't enough, Allen took his talents to the big screen and starred in the 1998 Spike Lee film, "He Got Game."Allen's performance as Jesus Shuttlesworth netted him great reviews and basketball fans have turned the movie into a cult classic.

His former teammates, Garnett and Pierce, have recently made important decisions about their own careers. Garnett has already announced he is retired, while Pierce is set to finish his career after the 2016-17 season.

Allen will always be remembered as one of the best shooters ever to step on the hardwood and a great individual player whose selflessness in joining Garnett and Pierce helped bring hardware back to Boston and put a ring on his finger.

He's a legend in every sense of the word and there should already be a spot waiting for him in theNaismith Memorial Basketball Hall of Fame.

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