After officials upheld Toronto Raptors …

After officials upheld Toronto Raptors wing OG Anunoby’s charge against still-shuffling Boston Celtics star Kemba Walker on the fourth night of the NBA season, Raptors coach Nick Nurse said from a TD Garden hallway, “I’m 0-for-2 on challenges, and I can’t believe it. I don’t have any idea what I’m doing here. Zero.”