The San Antonio Spurs announced today that Tim Duncan is retiring after 19 seasons in the NBA.

Duncan is going down as the greatest power forward of all time and debates will rage over the next couple days about where the unobtrusive and secretive big man should be in the greatest players of all-time rankings.

By my estimation he is definitely top ten and would fall in at number 7 behind Michael Jordan, Bill Russell, Kobe Bryant, LeBron James, Magic Johnson and Larry Bird.

Dirk Nowitski said on Duncan, "He wasn't flashy and always put the team first. I will always appreciate that he was about winning and never worried about the limelight. The league will miss him."

Duncan finishes his career as a five time champion, a 15-time all-star, a two-time MVP, one of two players to win a title in three different decades and one of two to players with at least 26,000 points, 15,000 rebounds, and 3,000 blocks.