#3 Karen Khachanov
Karen Khachanov is another special talent who has been billed as a future star. Khachanov won the Kremlin Cup last year, which will be a big source of motivation for the 23-year-old ahead of the event.
The Russian won the Open 13 event in Marseille last year by beating Lucas Pouille of France in the final. He then made a big move in October by beating Novak Djokovic in the final of the Paris Masters.
Khachanov's power-packed grounstrokes can push anyone back behind the baseline. His two-handed backhand in particular gives everyone fits, and he can combine that with some deft drop shots and volleys to keep his opponents guessing.
Khachanov hasn't had a great year so far, and he will be looking to salvage something out of it by winning his second consecutive Moscow title.