Raonic into Open last eight as Zverev self-destructs

Milos Raonic kept his cool to reach the quarter-finals Monday as young Alexander Zverev went into meltdown and crashed out of the Australian Open.

The fourth seed erupted in frustration and fury during the second set of a 6-1, 6-1, 7-6 (7/5) drubbing by the Canadian 16th seed, hammering his racquet into the ground eight times to leave it a mangled mess.

"I just tried to stay composed, "said Raonic.

"It worked extremely well for me today.

"I played incredibly good, did a lot of things extremely well."