Roger Federer breezes through Ciilic to win his 20th Grand Slam title at Australian Open on Sunday (photo credit: Getty Images)

Tennis greats Roger Federer and Novak Djokovic have reached the quarter-finals of the Shanghai Open tennis tournament.

Top seed Federer eased past Spain’s Roberto Bautista Agut 6-2, 2-6, 6-4 while Djokovic saw off Italy’s Marco Cecchinatto, 6-4, 6-0 to advance.

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Also through to the last eight are Kei Nishikori, Alexander Zverev, Borna Coric, Kyle Edmund and Kevin Anderson.