“I don't know why (we) don't use the challenge system for double bounce," Medvedev said after the match.

In a rematch of their five-set Wimbledon quarterfinal, Daniil Medvedev will take on world No. 1 Jannik Sinner in the US Open quarterfinals. Medvedev emerged victorious in that battle at the All England Club, snapping a five-match losing streak against the Italian—and I like the Russian’s chances of winning two in a row. But I’m going the safer route and playing Medvedev +5.5 games.

Sinner played a tremendous match against Tommy Paul in the Round of 16. After going down two breaks in the first set, Sinner was able to force a tiebreaker. The Italian ended up winning that ‘breaker 7-3, and he rode that momentum to a straight-set win. Sinner’s serve was a little off in the match, as he wasn’t hitting a good percentage of his first serves. But he was superb on his second serve, and his play from the baseline was flawless. Sinner was tracking down almost everything, even when Paul was finding angles. The Italian was also hitting some insane passing shots, and those ultimately helped him come through in big spots.

The problem with this matchup is that Sinner’s second serve won’t be good enough against Medvedev. If he’s not landing firsts at a high clip, the Russian will make him pay. Paul is one of the best returners in the sport, but Medvedev just might be the best. And Meddy also happens to have the size to obliterate any high-bouncing serves Sinner tosses into the box. Those gave the smaller Paul trouble.

Six Kings Slam: Watch the trailer everyone's talking about

Six Kings Slam: Watch the trailer everyone's talking about

Nadal, Djokovic, Alcaraz, Sinner, Medvedev, Rune. Saudi Arabia, Oct. 16-19.

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Medvedev will also serve as the ultimate test of Sinner’s conditioning. He is a wall along the baseline and knows that outlasting the Italian is his best path to winning this match. Medvedev is going to try to make this match as physical as possible. That means going for everything to extend rallies, and looking for as many chances as he can to reset points. If he can do that, he’ll give himself a chance as things head to the business end.

It’s also worth noting that Medvedev plays some of his best tennis at Arthur Ashe Stadium. A lot of people will talk about showmen, like Frances Tiafoe, leveling up in this historic building. But Medvedev’s only career Grand Slam title came at the US Open, and he beat Novak Djokovic in Arthur Ashe Stadium to do it. Medvedev is also 29-7 in his career at the US Open, and that 80.7% winning percentage is the best he has at any major.

You can count on Medvedev to produce some good tennis here—even against the top seed.

Pick: Medvedev +5.5 Games (-137)