New Orleans Hornets rookie Austin Rivers sank a layup and ran past the Boston Celtics' bench on his way back down the floor.
Doc Rivers had to fight his fatherly instinct and ignore him.
"I was about to say something and I didn't. I caught myself. I forgot he was on the other team," the Celtics coach said after facing his son for the first time Wednesday. "It's just a strange dynamic. I didn't enjoy it, honestly."
Greivis Vasquez had 15 points and 11 rebounds as the Hornets beat the Celtics 90-78.
Austin Rivers scored eight points in 23 minutes.
"I knew it was a different game and I didn't try to pretend like it wasn't," the younger Rivers said. "Now that this is out of the way, it will be a lot easier. I can just go out there and not worry about, 'Oh man, this is weird.' "
Doc Rivers is the fourth NBA coach to face his son, joining Mike Dunleavy (Mike Dunleavy Jr.), George Karl (Coby) and Butch van Breda Kolff (Jan).
Mavericks 105, Rockets 100: Dirk Nowitzki had 19 points, O.J. Mayo hit two tiebreaking free throws and host Dallas held off a Jeremy Lin-led surge to beat Houston. Lin and James Harden combined to score the last 18 points for the
Thunder 117, Nuggets 97: Russell Westbrook scored 32 points, and host Oklahoma City snapped Denver's six-game winning streak. Kevin Durant added 20 points as the NBA-best Thunder led wire-to-wire.
Spurs 103, Grizzlies 82: Tony Parker had 17 points and 11 assists and Tim Duncan added 19 points to help San Antonio beat Memphis, extending its home winning streak to 13 games.
Kings 95, Wizards 94: DeMarcus Cousins had 21 points and 16 rebounds to help Sacramento beat visiting Washington. With the score tied, Tyreke Evans was fouled on a drive to the basket with 11.4 seconds left. Evans made one of two free throws to give the Kings a 95-94 lead. the Wizards' Bradley Beal missed a runner in the closing seconds.
Hawks 109, Nets 95: Jeff Teague had 28 points and 11 assists, and Atlanta ended Brooklyn's seven-game winning streak. The host Hawks played without Josh Smith, suspended for one game and fined an undisclosed amount for "conduct detrimental to the team."