There is a fascinating battle in prospect for a US Open semi-final berth between first and fifth seeds Jannik Sinner and Daniil Medvedev and with both players in fine fettle, it's challenging to be confident about who will prevail and how the match will pan out.
Both players are Grand Slam champions - Sinner holds the Australian Open crown he won in January, beating Medvedev, who went all the way in New York City in 2021 - and the fact that the outsider has been so good in this tournament in the past should slightly unsettle prospective favourite backers going into this clash.
That said, it's probably fair to say that the oddsmaker have gauged it about right with their pricing of this encounter, although Sinner is short enough for victory alone at 2/5 to make little appeal.
So unless you believe that Medvedev is going to elicit the lights-out tennis he produced in the final major of the season three years ago, it's probably going to be a case of finding another way to support Sinner and that means a two-variable punt which sees him emerging triumphant and something else happening.
Handily for backers, Medvedev is playing at or near his peak himself so we can say for certain that Sinner will do supremely well to quash his opponent in three sets.
Jannik Sinner to win match & both players to win a set - 5/4
Tommy Paul has enjoyed by far the best season of his career so we can say with some confidence that Sinner did well simply to beat the Queen's Club champion in the fourth round of this year's US Open.
Paul broke the top seed in the opening set but the Italian stayed resolute and ended up triumphing 7-6 7-6 6-1, with the American clearly a beaten man after losing the two early tiebreaks.
The fact that the Melbourne Park hero dug deep to achieve his reward in the last 16 tells a story and it's one that may help the world number one also see off Medvedev in the last eight.
That said, punters should remember that on his day, the fifth seed can be devastatingly good in New York, where he completely dominated Novak Djokovic 6-4 6-4 6-4 in the 2021 final.
The likelihood, then, is that Sinner should be good enough to pull rank on Medvedev, although it's also probably more likely that the outsider will win at least a set rather than go down in straight sets.
It's difficult to tell if the pressure is now off Sinner's shoulders with big rivals Carlos Alcaraz and Djokovic having exited the singles early, but there's still a long way to go for the man from the Dolomites if he is to make it two Grand Slam hard-court singles triumphs this season.
Jannik Sinner to win from behind - 7/2
Despite losing 6-0 6-1 6-3 to Medvedev in their last 16 clash, Nuno Borges was getting into the match more with each and every set and that may just offer a clue as to Sinner's hopes of defeating the fifth seed.
Medvedev is playing well, of that there is little doubt. He was in fine touch against Alcaraz at Wimbledon in July too, but appears to lack the knowhow to turn around negative situations on grass, which would have to count as one of his weaker surfaces.
Once he gets going, hard courts seem to suit this lean machine most. And he really has been getting going in New York City this year, winning all of his first sets 6-3, 6-3, 6-3 and, against Borges 6-0.
Medvedev may possess slightly more steel, and definitely more experience, at this level than Paul, who Sinner edged 7-6 in not only their first set but also their second.
While it's feasible that Medvedev could lead Sinner, whether 1-0 or 2-1, it's also quite possible that Sinner may finish off playing his best tennis while Medvedev's standard starts to wane, as happened in Melbourne where he came from 2-0 down to triumph.
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Jannik Sinner - 2/5
Daniil Medvedev - 2/1
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This article was written by a partner sports writer via Spotlight Sports Group. All odds displayed on this page were correct at the time of writing and are subject to withdrawal or change at any time.