Guy Den Ouden and Zsombor Piros meet in the quarterfinal at Hagen on Friday. Zsombor Piros is 9-1 across recent matches. Guy Den Ouden comes in at 8 wins from the last ten.

Zsombor Piros is clearly higher-rated on clay — our number puts Piros around 62%. The edge belongs to Piros — real, but not the kind you take for granted at this level.