Friday's Jingshan quarterfinal pits Alex Bolt against Dane Sweeny on hard. Alex Bolt has won 3 of the last 10. Dane Sweeny has won 4 of the last 10.

The serve is where this match separates: Bolt has been winning 70.3% of first-serve points to Sweeny's 66%, and on hard that gap compounds fast. Bolt arrives with very little recovery time; Sweeny comes in off a compressed schedule. This one is close to a coin flip, and the lean toward Bolt is exactly that — a lean.