Just terrible, terrible news out of Boston: Rajon Rondo has torn his ACL and will be forced to sit out the remainder of the ’12-13 season. The Celtics point guard was averaging 13.7 points per game and 11.1 assists per game this year.

Via Yahoo! Sports:

Celtics superstar Rajon Rondo tore the ACL in his right knee and will be lost for the season.

It is possible that Rondo could return for the start of the 2013-’14 season, but a timetable for his return won’t be clear until after his surgery.

Rondo injured the knee in Friday’s double-overtime loss to the Atlanta Hawks, where he had delivered his second consecutive triple-double. He was scratched from the Celtics-Heat game on Sunday with what the team termed a “hyperextended right knee.” MRI results Sunday afternoon confirmed the Celtics’ worst fears.

Here’s to a safe and speedy recovery.