Novak Djokovic got a huge scare from 15th-seeded Stanislas Wawrinka before hanging on to win in the 22nd game of the fifth set to advance to the quarterfinals of the Australian Open.
The top-seeded Djokovic needed 5 hours, 2 minutes for a 1-6, 7-5, 6-4, 6-7 (5), 12-10 victory that ended early Monday morning.
Djokovic broke Wawrinka's serve in the final game to clinch the win on his third match point with a cross-court backhand.
Djokovic is the two-time defending champion and has an 18-match winning streak at Melbourne Park. He is trying to become the first man in the Open era to win the tournament three times in a row.
He moves on to face Tomas Berdych, who needed five match points in the tiebreaker before beating South Africa's Kevin Anderson 6-3, 6-2, 7-6 (13) to reach the quarterfinals for the third straight year in Australia..
Maria Sharapova has lost only five games in four matches on the way to the Australian Open quarterfinals, a record at the season's first ...