Australian tennis legend John Newcombe has backed Thanasi Kokkinakis to become one of the best players in men's tennis.
The 18-year-old moved from 570 to 150 in the world rankings this year, thanks in part to his first-round victory over Igor Sijsling at the Australian Open.
Looking ahead to the future, Newcombe believes that the rookie, along with fellow Aussie Nick Kyrgios, could make some "good inroads" in 2015.
"He's going to make a move next year. I think he's the same as Nick, certainly with a potential to be top 20, top 10, top four or five in the world," the 70-year-old told AAP.
"It might take Thanasi an extra year to get it, but I think he'll make good inroads next year. I'd be very surprised if he's not well entrenched in the top 100 by the end of next year."
Adelaide-born Kokkinakis only turned professional in 2013.
