The ATP No. 1 came back from a set down for the third consecutive match to defeat Karen Khachanov Saturday at the Serbia Open, 4-6, 6-1, 6-2.

Both of these players are in need of a win in this match, but it's the Argentine that is the better clay-court player.

Khachanov's heavy style may play right into the world-class Californian's hands.

Defending champion Andrey Rublev charges into the second round while wild card Tallon Griekspoor upsets No. 7 seed Aslan Karatsev.

The men were challenged to name every ATP world No. 1. Only one player managed to guess them all.

The seeds are about to collide in Melbourne, giving us some tantalizing third-rounders.

The Russian tried to make a new friend, but it didn't go too well.

The Frenchman finished up a great week in Adelaide with a 6-4, 6-4 victory over No. 2 seed Karen Khachanov in the final round.

With four Russian men finishing the year ranked inside the Top 30, who is in pole position to lead the charge next season?

The Russian has recently been involved with multiple luxury brands.