5-time NBA champ Tim Duncan retires after 19 seasons

SAN ANTONIO -- Tim Duncan spent nearly two decades as the quiet storm in the middle of the San Antonio Spurs franchise, putting the team on his broad shoulders and carrying it to heights unseen in modern American sports.With Duncan as the focal point, the Spurs won five championships, made the playoffs in all 19 of his seasons and cemented themselves as cemented themselves as the most enduring success story of their era.And now, the ageless and reluctant superstar is finally calling it a career.