Friday's Porto quarterfinal pits Edas Butvilas against Jerome Kym on hard. Jerome Kym has won 7 of the last 10. Edas Butvilas is 6-4 across recent matches.

The serve is where this match separates: Kym has been winning 74.8% of first-serve points to Butvilas's 69.4%, and on hard that gap compounds fast. Butvilas comes in off a compressed schedule. This one is close to a coin flip, and the lean toward Kym is exactly that — a lean.