Roger Federer talks about Aussie youngsters Nick Kyrgios and Bernard Tomic

Roger Federer said he has seen improvements in Australia’s tennis youngsters Nick Kyrgios and Bernard Tomic, who have been in the centre of tennis controversy due to their behaviours.

Federer, who is recuperating from a final round loss against Canada’s Milos Raonic at the Brisbane International earlier this month, believes Kyrgios could change his attitude toward the game with more experience. Kyrgios made headlines for the wrong reasons last season, including an on-court sledge directed at world No. 4 Stan Wawrinka.

“I haven't followed him much in recent times, but I saw him playing at the Hopman Cup and he played great,” Federer said, reports Tennis World USA. “He has to make sure that the game is there, and obviously he has to behave well.”

As for Tomic who is currently competing as the top seed in the 2016 Apia International Sydney, Federer gave an insight about the Aussie’s claims that he is ready to break into the top 10. The 17-time Grand Slam winner admitted Tomic has been playing good in recent tournaments, but making into the top 10 would be “another story.”

“Many seasons in a row we have now seen or heard that top 10 is the goal, and he's missed out on it by a long shot,” Federer added. “I think before speaking so highly, maybe it's good to take it to the next level, whatever that is.”

Meanwhile, Kyrgios’ chances for an Australian Open title could be in jeopardy after the young gun retired hurt from the Kooyong Classic just days before the first Grand Slam event of the year, reports the Sydney Morning Herald. Kyrgios retired in the second set of his match against Belgian David Goffin, although the Aussie did not appear to limp off the court.