Canterbury's Adam O'Brien was filmed punching the coach's box amid frustrations over the Bulldogs' recent performance slump.
Canterbury assistant coach Adam O'Brien has been captured in a fiery coach's box moment, as frustrations over the Bulldogs' slump spilled over at Magic Round.
In the short clip, which has gone viral online, O'Brien can be seen punching the window of the coach's box at Suncorp Stadium.
Pressure is building at the Bulldogs after the powerhouse Sydney club slumped to another loss this weekend, this time against Cronulla.
The Bulldogs, who entered 2026 as genuine finals contenders, have now managed only a single win from their last eight starts.
Earlier this year, coach Cameron Ciraldo was involved in his own headline-grabbing moment in the coach's box moment at GIO Stadium in Canberra.