Nick Kyrgios praises Andreas Seppi's "mental strength"

Nick Kyrgios has praised the "mental strength" of Andreas Seppi after their epic five-set match in the fourth round of the Australian Open on Sunday.

The unseeded Australian, roared on by a vocal home support, fought back from two sets down to run out the victor against Seppi, but the 19-year-old was impressed with how his opponent remained composed while competing in the hostile atmosphere.

Full credit to Seppi too, he was unbelievable last night & his mental focus in dealing with the crowd was immense. I wish him all the best.

— Nicholas Kyrgios (@NickKyrgios) January 26, 2015

Kyrgios will now play sixth seed Andy Murray in the quarter-finals on Tuesday.