Del Potro - Zemlja

Although Rublev is considerably better, but mandarin can definitely challenge, not only because he himself can do something impressive, but also because Rublev's consistency is good and there is a lot of risk in predicting the outcome considering that Rublev is one of the most unstable top level players this season, so one must evaluate whether it is worth getting involved. It wouldn't be surprising if all five sets were played in this match, as the Frenchman is certainly capable and not bad at playing on grass, but personally I think Rublev will handle the Frenchman in four sets.

P.S. A very low game over, as the Frenchman can handle the ball quite well, especially on grass, and knowing how vulnerable Rublev is, it will be worth a lot for such a game over.