Andy Murray excited by Mikhail Kukushkin test

World number four Andy Murray is excited by his Australian Open fourth round match against Kazakhstan's Mikhail Kukushkin on Monday.

The Brit edged out Kukushkin 5-7 6-3 6-2 in his first match of the season at Brisbane earlier this month.

"The first six games he was unbelievable - he hardly missed a ball; he was hitting it huge," said Murray.

"He's having the best run at a Grand Slam in his career so I need to play well, but I'm looking forward to it."

The winner of Monday's tie will face either Kei Nishikori or Jo-Wilfried Tsonga in the quarter-finals.