Wawrinka, Federer book last-eight spots

Fourth seed Wawrinka now finds himself the highest ranked player in the top half of the draw and with the credentials to go all the way to emulate his 2014 championship. The hard-working Swiss faces a tough match against former finalist Jo-Wilfried Tsonga for a place in the semi-finals where Murray can no longer be an opponent after the Briton’s stunning upset by world number 50 Mischa Zverev earlier on Sunday. Later, a resilient Roger Federer showed there was life in the 35-year-old’s legs as he overhauled fifth seed Kei Nishikori 6-7(4) 6-4 6-1 4-6 6-3 to book a place in the quarter-finals. After six months out of the game, Federer’s fairytale returns continued under the lights of Rod Laver Arena where he emphatically quashed doubts about his fitness in three hours and 24 minutes.