Sydney: Australian cricket great Shane Warne told tennis bad boy Nick Kyrgios yesterday respect was more important than being liked and warned him "you're testing our patience mate".

Nick Kyrgios and Shane Warne
Nick Kyrgios and Shane Warne 

Showman Kyrgios has been making headlines for all the wrong reasons, with his sex slur at Stan Wawrinka last month sparking stinging criticism from fellow players.

He lost at the US Open Tuesday to Andy Murray before jousting with the media over his reputation and behaviour, which some see as petulant and disrespectful while others view as good for a sport in need of characters.

Warne offered his fellow Australian some attitude tips, and urged him not to waste his talent. "We all realise you're only 20 & have a lot to learn buddy. But please don't waste your talent, everyone in the world, especially us Australians want to respect u," he wrote on his Facebook page.

"Remember respect is way more important than being liked, u need to respect the game of tennis & yourself. You're testing our patience mate, show us what you're made of & how hungry you are to be the best in the world, it's time to step up & start winning, no excuses."