A spot in the next round is at stake on Sunday, when Roman Safiullin goes up against Y. Bu in the Hangzhou quarterfinal. Roman Safiullin is 6-4 across recent matches. Y. Bu is 6-4 across recent matches.

The underlying stats are tight across the board — this is a matchup decided by a handful of points. Safiullin comes in off a compressed schedule; Bu arrives with very little recovery time. Little separates them; Safiullin gets the nod on the finest of margins.