Lleyton Hewitt believes Kyrgios "could really wreck havoc" on the draw at Wimbledon

Big-hitting Australian Nick Kyrgios "can match it with the best in the world" at Wimbledon, according to his compatriot Lleyton Hewitt.

The 41-year-old former world No. 1, who won Wimbledon back in 2002, has backed his countryman to make a big impact at SW19 with his huge serving a significant factor.

Kyrgios' strongest showing at Wimbledon came in 2014 when he reached the quarter-finals, but Hewitt believes he is the "hardest floater" in the draw and can be a real threat.

“On his day, he can match it with the best guys in the world, particularly on hard courts or grass,” Hewitt, who is playing at the Giorgio Armani Tennis Classic this week, said of Kyrgios. “Anyone that can win so many easy service games like Nick, he’s one of the best spot-servers on tour, so he’s going to be awfully hard to break.

"A lot’s still going to depend on the draw but he’s definitely going to be the hardest floater, along with Andy Murray. There are certain players that could really wreak havoc.”