Montreal - Australian Nick Kyrgios exited the Rogers Cup to boos and a hefty fine from the ATP for insulting remarks, slumping to a 7-5, 6-3 third round loss to big-hitting American John Isner on Thursday.
The controversial Kyrgios stepped onto the court at the centre of a storm, after insulting Swiss opponent Stan Wawrinka on Wednesday, and was greeted by a smattering of boos from the Montreal crowd.
Prior to the match the ATP had fined Kyrgios $10 000, the maximum penalty available, for remarks directed at Wawrinka and his girlfriend picked up by a courtside microphone.
"Kokkinakis banged your girlfriend," Kyrgios said, referring to his Davis Cup team mate Thanasi Kokkinakis. "Sorry to tell you that, mate."
Kyrgios was also fined $2 500 for comments made to a ball boy during the second-round match.
French Open champion Wawrinka, who separated from his wife last year, has been linked with Croatian WTA Tour player Donna Vekic, as has Kokkinakis.
Following his loss to Isner, Kyrgios said he considered the matter closed but the ATP has said it is reviewing the incident and considering further sanctions against the Australian.
"It's all cleared now. Obviously I apologised in public (on Twitter and Facebook) and privately as well.
"I've been fined. So everything is sort of put to bed now. I thought we could move on from it."
Asked if he feared any further sanctions from the ATP, he said "no".
With Isner serving for the match there were more boos for Kyrgios who lost his cool again engaging in a heated exchange with a spectator.
Turning towards the side of the court, he barked: "You're so tough man, so tough."
After Isner closed out the match with a thundering unreturnable serve Kyrgios quickly left the stadium to more boos.
Results on Thursday from the fourth day of the ATP Montreal Masters (x denotes seeded player):
Novak Djokovic (SRB x1) bt Jack Sock (USA) 6-2, 6-1
Ernests Gulbis (LAT) bt Donald Young (USA) 6-4, 6-4
Jeremy Chardy (FRA) bt Ivo Karlovic (CRO) 4-6, 7-6 (7/1), 6-4
John Isner (USA x16) bt Nick Kyrgios (AUS) 7-5, 6-3
Andy Murray (GBR x2) bt Gilles Muller (LUX) 6-3, 6-2
Jo-Wilfried Tsonga (FRA x10) bt Bernard Tomic (AUS) 7-6 (9/7), 6-3
Rafael Nadal (ESP x7) bt Mikhail Youzhny (RUS) 6-3, 6-3
Kei Nishikori (JPN x4) bt David Goffin (BEL x13) 6-4, 6-4