Melbourne: Novak Djokovic steamed into the last eight of the Australian Open with a 6-3, 6-4, 6-0 thrashing of Spaniard Nicolas Almagro on Sunday but fumed after being given a code violation for coaching during the match.
Djokovic was sanctioned by chair umpire Fergus Murphy early in the second set, but said he had only made eye contact with coach Marian Vajda in the stands.
"I don`t think it was the right call, because I missed a forehand and then I turned to my coach as you always make as a player an eye contact with your team," said the world number three Djokovic, who faces a possible fine following a review.
"That`s what I did. I didn`t ask for any advice, you know, because they can`t help too much. You`ve got to do what you got to do."
"What I`m saying is that even though I think it was the wrong call, if he thinks that it was right, he should have told me before giving me a warning."
"Just tell me, `hey, maybe your coach is involved too much before the points, he`s giving you signals`. I would say, `yes, okay, sorry, no problem`."
Djokovic appeared in little need of coaching as he dominated the 14th seeded Almagro from the baseline. The 2008 champion faced just one break point in the first two sets then raced through the third in 28 minutes to seal an emphatic victory.
He fired 12 aces and 31 winners in the 106-minute contest and will meet Czech sixth seed Thomas Berdych in the quarter-finals.
The 23-year-old has been knocked out in the last eight for the last two years, losing to Andy Roddick in 2009 and Jo-Wilfried Tsonga last year.
"I`m hitting the ball well. Physically and mentally I`m fit and ready to win another match," said Djokovic, who came close to an elusive second grand slam at Flushing meadows, beating Roger Federer in the semi-finals but losing to Rafa Nadal in the final.
"If I go out with a white flag, you know, it`s not the right attitude... Of course, I have big respect for (Federer) and Nadal and all the players, but I`ve won against all of them and I know how it feels like to play on the big stage."