Novak Djokovic was disqualified from the US Open after he hit a line judge with a tennis ball. This happened during a match when he lost a point to Pablo Carreno Busta from Spain. According to the grand slam rules,  his act was deemed “Aggravated Behaviour” and was, therefore, disqualified.  We were joined by Dr Catherine Ordway, Assistant Professor, Sports Management at the University of Canberra to discuss the matter.