Tom "Satch" Sanders, a defensive specialist who won eight World Championships with the Celtics, addressed the team after Sunday's practice in Waltham. Satch Sanders spent all of his 13 years in the NBA with the Boston Celtics, being part of eight championship teams in 1961-66, 1968 and 1969. In NBA history, only teammates Bill Russell and Sam Jones have won more championship rings during their playing careers. He ended his career in 1973. He coached the team for a brief period in 1978. Today, Satch is the NBA's Vice-President and Director of Player Programs. Satch designs programs to help both veteran and rookie players take advantage of their unique status as professional athletes and to assist them in coping with the special pressures they face. Player Programs is responsible for facilitating post-career counseling; educational and employment opportunities; the NBA/PA (Players Association) Anti-Drug and Alcohol Programs; advice on dealing with celebrity status and media attention and a nonprofit foundation that benefits former players.