Zverev’s rise to power can gather pace against big-serving Raonic
Muguruza is playing well enough to thwart top seed
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Raonic v A Zverev
Punters hoping to find a tasty winner on fourth-round day were yesterday getting stuck into Alexander Zverev to upend last year's losing finalist Milos Raonic and those who took the early plunge could be proved correct.
Alexander Zverev, the 20-year-old German who lifted his first Masters Series title on clay in Rome in May, is quite simply the best young player in men's tennis.
He has the lot – there are few weaknesses in his all-round game – and it will be a surprise if he fails to become world number one in the coming years.
Zverev, the younger brother of Mischa who lost to Roger Federer on Saturday, stands tall at 6ft 6in and he is as lean and hungry for success as they come.
He has dropped to 12th in the ATP rankings but became a top-ten player after upsetting Novak Djokovic in the Foro Italico final.
Raonic is orthodox and methodical but he can also be wooden on court and is a bit of a one-trick pony. There are question marks over his form as he has been taken to tiebreak sets by Jan-Lennard Struff, Mikhail Youzhny – who won a set against the Canadian – and Albert Ramos-Vinolas.
Raonic will win points with his big serve, but Zverev can prosper in that department too. And the German looks good enough to boss his opponent when it comes to groundstrokes and rallies.
The early 23-20 about Zverev progressing to the quarter-finals went on Sunday, but anything above even-money looks worth taking.
1pt 11-10 general
Kerber v Muguruza
World number 15 Garbine Muguruza is favourite to defeat world number one Angelique Kerber, but the Spaniard is probably playing well enough to merit market leadership.
Muguruza's ranking dropped after she lost her French Open title last month, but talent-wise she is still a top-five performer.
She looks just about as good on grass as she is on clay – and probably better on the fast green courts than she is on hard ones, where the likes of Karolina Pliskova and Johanna Konta are her superior.
Muguruza is shining in the London Slam but it's difficult to say the same about Kerber.
She is not showing the form she displayed last year, when she won both hard-court Grand Slams in Melbourne and New York and was runner-up to Serena Williams on the Wimbledon grass.
Her class helped her to survive clashes with Irina Falconi, Kirsten Flipkens and Shelby Rogers, but things are likely to get tougher for the German in round four.
Kerber won the first three in her personal series with Muguruza but the Spaniard has won their last four meetings (and eight of their last ten sets) to edge into a lead.
Muguruza merits market leadership, but there was little in it when she defeated Kerber 7-6 1-6 6-2 at the All England Club two years ago. Given that the top seed has one of the finest defensive games on the WTA Tour, it may pay to keep stakes sensible.
1pt 4-6 general
Andy Murray should find a way past Benoit Paire. The Frenchman can be both mercurial and inconsistent and that mixture is unlikely to help him against the world number one.
Murray, 1-7 to progress to the quarter-finals, needed four sets to oust Fabio Fognini in round three and his last-16 test is unlikely to be any tougher.
Rafael Nadal, Novak Djokovic and Marin Cilic should have few problems against respective opponents Gilles Muller, Adrian Mannarino and Roberto Bautista Agut, but Roger Federer could come under pressure against in-form Grigor Dimitrov.
British number one Johanna Konta faces a tough test against Caroline Garcia in a match that may be closer than many believe.
Konta has plenty of fight in her but does not yet look to be playing well enough to merit title favouritism and Garcia could see support at 4-5 to win at least a set.
Victoria Azarenka has returned to tennis in good style and could trouble second seed Simona Halep, while Agnieszka Radwanska may again have to box clever against Svetlana Kuznetsova.
Experience is likely to tell for Venus Williams in her match with Ana Konjuh.