Defending champion Wawrinka into Open quarters

MELBOURNE: Defending champion Stan Wawrinka won a thrilling fourth set tiebreaker to down Spain’s Guillermo Garcia-Lopez and book a place in the Australian Open quarter-finals on Monday.

The Swiss fourth seed prevailed 7-6 (7/2), 6-4, 4-6, 7-6 (10/8) and will play either Japan’s Kei Nishikori or Spain’s David Ferrer in the last eight.