Andy Murray (GBR) v Grigor Dimitrov (BUL) - 2nd on Centre Court
The British number one faces his toughest test yet against rising star Grigor Dimitrov. His other half Maria Sharapova may have lost in dramatic fashion on Centre Court yesterday, but the Bulgarian eleventh seed looked in majestic form as he battled past gutsy Leonardo Mayer to book his spot in the quarter finals. Murray has looked seamless so far, finally recovered from last December's back surgery and reaping the rewards of Amelie Mauresmo's coaching. He is yet to be truly pushed by an opponent but Dimitrov will pose a formidable challenge on Centre this afternoon. Brace yourselves, Britons - this could be a nail-biting ride.
Roger Federer (SUI) v Stan Wawrinka (SUI) - 3rd on Centre Court
Injury-free with a different racket and new coach Stefan Edberg, the Fed has looked in fine form this tournament with many tipping him for an eighth title, especially following Nadal's shock exit yesterday evening. Yet to drop a set, today sees him square off against his friend and compatriot, Stan Wawrinka. Federer leads their head-to-head 13-15 and experience is his crucial advantage today as this year's Australian Open champion Wawrinka has reached the last eight at SW19 for the very first time. He'll need to produce some almighty tennis to unseat Federer at his favourite tournament.
Eugenie Bouchard (CAN) v Angelique Kerber (GER) - 1st on No.1 Court
Instead of the anticipated Maria Sharapova/Serena Williams quarter-final, we have two bright stars of the women's game battling it out on No.1 Court this afternoon. Exciting Canadian youngster Eugenie Bouchard takes on an in-form Angelique Kerber - the woman who ousted Maria Sharapova in a three-set thriller yesterday afternoon. Both players are riding a wave of success, hoping to book their spot in the semi-finals - it's hard to call, although Bouchard will have the fresher legs of the two which might just give her the edge.
Nick Kyrgios (AUS) v Milos Raonic (CAN) - 3rd on No.1 Court
Kyrgios pulled off the shock of the tournament last night, dumping his childhood hero Rafael Nadal out of the tournament in four sets. Long talked of as tennis's next big star, the young Australian more than proved his potential by overcoming the world number one, ranked a staggering 143 places above him. And he didn't even look fazed. Fellow rising star Raonic - who was surely expecting a clash with French Open champion Nadal - will need to bring his A-game to halt Kyrgios' momentum. Both will be readying themselves for an almighty battle to reach their maiden Grand Slam semi-final.
Novak Djokovic (SRB) v Marin Cilic (CRO) - 2nd on No.1 Court
The number one seed has never lost a match to Croatian giant Marin Cilic in the pair's nine meetings and comes into today's quarter-final after a convincing straight-sets victory over France's Jo-Wilfried Tsonga. Cilic also despatched a Frenchman, Jeremy Chardy, but it took three tight sets to post his victory and set up a tenth clash with the number one seed. But even with former Wimbledon champion Goran Ivanisevic in his corner, it's hard to imagine Cilic overcoming Djokovic. As long as the Serb can get Cilic's powerful serve back into play, he should have few problems progressing to the semi-finals.