Stan Wawrinka won a bad-tempered clash with Jo-Wilfried Tsonga to reach the Australian Open semifinals as Venus Williams' late-career surge sent her soaring into the last four on Tuesday.
Serena Williams kept up her pursuit of a record Grand Slam title and a return to world No.1 on Monday as she reached the Australian Open quarterfinals without dropping a set.
Rafael Nadal staged a magnificent fightback to beat rising German star Alexander Zverev in a five-set thriller to reach the fourth round at the Australian Open on Saturday.
Third seed Milos Raonic charged home to claim a quarter-final spot at the Australian Open with a fluctuating four-set win over Spain's Roberto Bautista Agut on Monday.
World number one Andy Murray suffered a huge upset to 50th-ranked Mischa Zverev to follow Novak Djokovic to the exit as the shocks kept rolling at the Australian Open on Sunday.
Serena Williams made the net seem much higher and the court much smaller for Nicole Gibbs, a first-timer on Rod Laver Arena.
For both the veteran, Mirjana Lucic-Baroni, and the newcomer, Jennifer Brady, it's a completely unexpected position to be in: Playing for a spot in the quarterfinals of the Australian Open.
Andy Murray showed no signs of trouble with his sore ankle as he advanced to the round of 16 at the Australian Open for the ninth straight year, avoiding an upset against Sam Querrey on a mild Friday afternoon.
The stark reality of an Australian Open third round without Novak Djokovic -- for the first time in 11 years -- hits home on Saturday when the remaining players in his half of the draw, Rafael Nadal and Milos Raonic among them, attempt to advance to the second week of the tournament.
Defending champion Novak Djokovic was sensationally knocked out in the second round of the Australian Open by unheralded Uzbek Denis Istomin in a major shock on Thursday.