Former Celts star Johnson dies at age 52

AUSTIN, Texas -- Dennis Johnson, the star NBA guard who was part of three championships and teamed with Larry Bird on one of the great postseason plays, died Thursday after collapsing at the end of his developmental team's practice. He was 52.

Johnson, coach of the Austin Toros, was unconscious and in cardiac arrest when paramedics arrived at Austin Convention Center, said Warren Hassinger, spokesman for Austin-Travis County Emergency Medical Services.

Paramedics tried to resuscitate him for 23 minutes before he was taken to a hospital and pronounced dead, Hassinger added.

Johnson, a five-time All-Star and one of the top defensive guards, was part of the last Boston dynasty. He spent 14 seasons in the league and retired after the 1989-90 season. He played on title teams with the Celtics in 1984 and 1986 and with the Seattle SuperSonics in 1979, when he was the NBA finals MVP.

He averaged 14.1 points and 5.0 assists for his career. When he retired, he was the 11th player in NBA history to total 15,000 points and 5,000 assists.