MELBOURNE, Jan 25 (Reuters) - Aryna ‌Sabalenka played tiebreak tyrant again as she fended off Canadian young gun Victoria ‌Mboko 6-1 7-6(1) to reach the Australian Open quarter-finals for a fourth time ‌in succession.

Twice champion Sabalenka crushed Mboko in a 31-minute first set in the early match at Rod Laver Arena but gave up a 4-1 lead in the second as the 17th seed mounted an impressive comeback.