Germany's Alexander Zverev smashes his racket in frustration during his fourth round match against Canada's Milos Raonic at the Australian Open tennis championships in Melbourne, Australia on Jan 21, 2019. (Photo: AP/Kin Cheung)

MELBOURNE: German prospect Alexander Zverev only managed to beat his racket on Monday as the highly-regarded fourth seed was dumped out of the Australian Open by big-serving Canadian Milos Raonic in a surprisingly one-sided 6-1 6-1 7-6(5) fourth round triumph.