In-form Berdych could nab set against Federer
Sandgren can take a chunk out of Hyeon Chung
Eurosport, midnight Tuesday
Berdych v Federer
Time and time again Roger Federer has only had to turn up to send Tomas Berdych scurrying into his shell and it will be a brave man who backs that trend to be bucked in Melbourne this year.
But while Federer is likely to boss his friend and Laver Cup teammate, this time he may be slightly less certain to do so.
Berdych is playing superbly well, having dismissed Juan Martin del Potro and Fabio Fognini in straight sets in his two latest outings.
The Czech has made the final before so knows what he needs to do, but executing game-plans can often be problematic for a player who has a history of negative thinking on the big stage.
Berdych has crumpled mentally on umpteen occasions, particularly when across the net from Federer. But on this occasion he may be performing well enough to nab a set before the likely freeze sets in.
T Berdych to win at least a set
1pt 4-5 Betfair, Paddy Power
Sandgren v Chung
Hyeon Chung stole the headlines at Melbourne Park by ousting Novak Djokovic on Monday, but the South Korean youngster may find the going tougher in his quarter-final clash against powerful American Tennys Sandgren.
It's a huge surprise to see the pair lining up with a place in the last four at stake, but while Chung always looked like making the grade one day the same cannot be said of Sandgren.
He has been a revelation, outplaying Jeremy Chardy, Stan Wawrinka and Dominic Thiem, accomplished performers all in this Grand Slam tournament, and it's just possible that the fairy-tale could continue.
Sandgren may be value to upset Chung, but with the favourite's class pretty much already confirmed it may be wiser to simply back the outsider to win at least a set.
T Sandgren to win at least a set
1pt 8-11 general
Halep v Karolina Pliskova
Simona Halep is edging favouritism against one of the best WTA players yet to win a Grand Slam singles crown.
But while Pliskova is capable of causing the Romanian problems, their personal series is a concern for anyone thinking of supporting the Czech.
Halep leads 6-1, with Pliskova having raised the bar only once in a Fed Cup clash, and with the Australian Open top seed having accounted for Naomi Osaka in impressive style, outsider backers are advised to take care.
Kerber v Keys
It's not a surprise to see Angelique Kerber made favourite to defeat Madison Keys at a venue where the German won the title two years ago, but it may not do to underrate the American's chances of causing an upset.
Keys to win at least a set at 8-15 can be considered, but while that could oblige it's not a price that screams value.
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