Bored one day, bundled out in disgrace the next.
Nick Kyrgios’s turnaround from temperamental 21-year-old to tournament-winning toast of tennis has been short-lived after he was accused of unprofessional behaviour by the umpire in a 48-minute second round loss at the Shanghai Masters.
The Australian was dispatched 6-3 6-1 by German journeyman Mischa Zverev and could yet face further sanction after appearing to put in no effort during various stages of the match.