Alexander Zverev was heckled by a spectator during Friday's Munich Open quarter-final and the top seed asked the chair umpire to eject the individual who alluded to domestic abuse allegations against the German.
Carlos Alcaraz heralded the changing of the guard in men's tennis as he ended Novak Djokovic's long reign at Wimbledon
The explosive and temperamental 24-year-old Kyrgios has a history of notorious outbursts and is being investigated for potential rule violations after calling the ATP Tour "corrupt" during the US Open last week.
While prone to losing to modest opponents, Kyrgios often produces his best tennis when up against one of the 'Big Three' of Novak Djokovic, Roger Federer and Nadal.
Nick Kyrgios has been fined $113,000 by the ATP for arguing with the chair umpire and smashing two rackets during his second-round loss at the Cincinnati Masters.
Australia's Nick Kyrgios has been fined a total of $17,500 for unsportsmanlike conduct by the ATP after a series of outbursts at officials at the Queen's Club championships on Thursday.
Top seeded Ash Barty overcame a slow start to defeat Maria Sharapova 6-4 6-1, while Simona Halep battled past Ekaterina Alexandrova 3-6 7-5 6-4 in the second round of the Cincinnati Masters on Wednesday.
Defending champion Novak Djokovic trounced stand-in David Goffin 6-1 6-2 for a clean sweep of his group at the ATP World Tour Finals on Thursday but spiced up a leisurely afternoon workout by picking a row with the umpire. The world number two, who will be joined in the last four by Milos Raonic after the Canadian beat Austrian Dominic Thiem 7-6(5) 6-3, began the week at London's O2 Arena quarrelling with a reporter and despite being relatively untroubled on court, there has been an edginess about the 12-times grand slam champion.
Roger Federer stared down defeat and saved two match points before knocking Tomas Berdych out of the Miami Open on Thursday with a 6-2, 3-6, 7-6(6) victory in their thrilling quarter-final.
A summary of sports events and sports persons, who made news on Wednesday