In a regular season filled with frustrating losses, this one had to be one of the most frustrating. The Celtics gave up an 18 point in the fourth quarter and lost 124-117.

Kemba Walker got hot and the C's seemingly had no answer.

He scored 18 of his 36 points in that last quarter and helped trigger a 30-5 finish to the game.

Kyrie Irving had 31 points to lead Boston. Jaylen Brown came off the bench and added 29.

NOTE: The Celtics played without Gordon Hayward, Aron Baynes and Al Horford...The C's are 43-30 and game behind the Pacers for 4th place...They host San Antonio tonight.