Toronto Raptors head coach Darko Rajakovic reached his boiling point after his team lost to the Lakers on Tuesday ... teeing off on referees for giving L.A. 23 free throws in the fourth quarter.
Rajakovic -- who's in his first season with the Dinos -- didn't hold back in his rant to media members after the 132-131 loss ... calling it "outrageous" the Purple and Gold continued to get calls in their favor ... and suggesting officials were helping LeBron James and Co. win the contest.
"What happened tonight, this is completely B.