San Antonio Spurs star power forward Tim Duncan on Monday announced his retirement after 19 seasons in the NBA, ending a glittering career that included five National Basketball Association championships and 15 All-Star Game appearances. The 40-year-old Duncan, who was originally selected by the Spurs as the first overall pick in the 1997 NBA draft, spent his entire career with the team. #ThankYouTD," the Spurs tweeted.
