Friday's Shanghai quarterfinal pits Daniil Medvedev against Tommy Paul on hard. Daniil Medvedev has won 10 in a row and 10 of the last 10 overall. Tommy Paul brings a 3-match winning streak into this one, 7-3 across the last ten.

The serve is where this match separates: Medvedev has been winning 72.8% of first-serve points to Paul's 69.4%, and on hard that gap compounds fast. This one is close to a coin flip, and the lean toward Medvedev is exactly that — a lean.