Saturday's Rome semifinal pits Daniil Medvedev against Jannik Sinner on clay. Jannik Sinner brings a 10-match winning streak into this one, 10-0 across the last ten. Daniil Medvedev has won 4 in a row and 7 of the last 10 overall.

Jannik Sinner has had the better of this rivalry, winning 10 of 17 against Daniil Medvedev. On clay specifically it reads 1-0 Sinner — worth more than the overall number this week.

There's a wide gap in our ratings on clay, and our number follows from it. The edge belongs to Sinner — real, but not the kind you take for granted at this level.