It appears the reason
Griffin has a small fracture in his back that will require rest but not surgery, and that was the reason why he couldn't make the training camp in Las Vegas that started Monday and won't be able to play in the FIBA World Cup that starts next month.
The Clippers have said Griffin's injury is not considered serious.
However, the Clippers were unaware of Griffin suffering his back injury during the playoffs.
Griffin did suffer a stress fracture when Clippers played the Houston Rockets on March 29, forcing the All-Star to miss the next game at Minnesota.
But Griffin, who played in 80 regular-season games and all in 13 of the Clippers' playoff games, has been working out in Los Angeles.