Federer, Murray thru

Roger Federer and Andy Murray reached the Wimbledon quarter-finals on Monday while Serena Williams sank her sister Venus in a battle of the all-conquering Wimbledon titans as Maria Sharapova dug deep to join the world number one in reaching the quarterfinals.  Meanwhile controversial Australian Nick Kyrgios was under fire for 'tanking' in his last-16 exit.

Seven-time champion Federer reached his 13th All England Club quarter-final with a 6-2, 6-2, 6-3 win over Spain's Roberto Bautista Agut.

The 33-year-old needed just 96 minutes to clinch victory and goes on to face French 12th seed Gilles Simon for a place in the semi-finals.

British third seed Murray claimed a 7-6 (9/7), 6-4, 5-7, 6-4 win over 2.11-metres tall Ivo Karlovic to book his place in the quarter-finals for the eighth successive year. Murray hit 62 winners to the Croatian's 75 but crucially only nine unforced errors to his rival's 32.

Serena secured her 14th win in 26 clashes with Venus and the sisters hugged at the net after the match on Centre Court finished 6-4, 6-3.

Sharapova endured her toughest test so far but still made it through to the quarterfinals with a 6-4, 6-4 win over Kazakhstan's unseeded Zarina Diyas.

In the men's games French 21st seed Richard Gasquet defeated Kyrgios 7-5, 6-1, 6-7 (7/9), 7-6 (8/6) in a controversial clash to avenge a second round loss to the temperamental Australian in 2014.

He tanked the third game of the second set -- allowing Gasquet four uncontested points -- after arguing with umpire James Keothavong over a code violation for swearing, a gesture which brought boos from the crowd.nIf his actions are deemed to be an act of deliberately not trying, then he could face a heavy fine.

French Open champion Wawrinka defeated Belgian 16th seed David Goffin 7-6 (7/3), 7-6 (9/7), 6-4 while US Open champion Marin Cilic made the quarter-finals for the second successive year with a 6-4, 4-6, 6-3, 7-5 win over unseeded American Denis Kudla.