World number one Novak Djokovic gave French teenager Quentin Halys a free tennis lesson for about an hour before the wildcard showed how much he had learnt in the Serb's 6-1 6-2 7-6(3) Australian Open second-round win.
Djokovic was at his clinically efficient best in the first two sets as he looked to be tactically three shots ahead of Halys and he opened up space on court at will while he romped to a 2-0 lead inside an hour.
The 19-year-old wildcard, ranked 167th in the world, then fought back in the third set, breaking the Serb for the first time and putting him under pressure before Djokovic ran away with the tie-break.
Djokovic, who is aiming for a record-equalling sixth Australian Open title, will next face either Italy's Andreas Seppi or American Denis Kudla in the third round.
Roger Federer overcame some feisty resistance from Alexandr Dolgopolov to safely advance to the third round of the Australian Open with a 6-3 7-5 6-1 victory on Wednesday.
The Swiss third seed had romped through the opening set of their second round clash on Rod Laver Arena in just 26 minutes before the 27-year-old Ukrainian started to assert pressure on Federer's serve in the second.
Federer held firm before applying some pressure of his own, eventually breaking the world number 35 in the 11th game before serving out the set in 45 minutes.
Dolgopolov's resolve faded away in the third, with Federer breaking his opponent's serve three times to clinch the contest in 93 minutes and maintain his quest for a fifth title in Melbourne.
Next up for Federer is Grigor Dimitrov (above), 10 years younger than the man his game seems modelled on, who struggled to suppress wild-haired Argentine Marco Trungelliti before completing a 6-3 4-6 6-2 7-5 victory.
Dimitrov, the former boyfriend of Russian five-times grand slam champion Maria Sharapova, is not one for hyperbole and has tired of the comparisons between himself and Federer since he won the Wimbledon junior title.
But he knows Friday represents an opportunity to kickstart his career again after a lull.
"It's a match that I want to play," he told reporters. "You never know, one tournament can change everything for you. You never know when that might be."
Dimitrov was ranked eight in the world in 2014 after beating defending champion Andy Murray to reach the Wimbledon semi-finals, but since then has fallen behind Japan's Kei Nishikori and Canada's Milos Raonic in the new wave of players.
