Wednesday's Estoril round of 16 pits Luciano Darderi against Pedro Martinez on clay. Luciano Darderi has won 6 of the last 10. Pedro Martinez has won 4 of the last 10.

The ledger favors Luciano Darderi, 4-1 across their 5 meetings with Pedro Martinez. On clay specifically it reads 2-0 Darderi — worth more than the overall number this week.

The serve is where this match separates: Darderi has been winning 70.5% of first-serve points to Martinez's 64.9%, and on clay that gap compounds fast. Martinez needs several things to break right at once; the percentages say they usually don't.