Wawrinka finds the answers to take down Medvedev

Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia - January 27, 2020 - Switzerland’s Stan Wawrinka celebrates winning his match against Russia’s Daniil Medvedev. REUTERS/Issei Kato

MELBOURNE (Reuters) - Former champion Stan Wawrinka emerged from a mid-match loss of confidence to battle past Russian fourth seed Daniil Medvedev to reach the Australian Open quarter-finals with a 6-2 2-6 4-6 7-6(2) 6-2 victory on Monday.

Medvedev, 23, arrived in Melbourne after a 2019 season featuring four titles and a Tour-leading 59 match wins and came into Monday's contest against Wawrinka having won both career meetings at Grand Slams in four sets.