Jan Lennard Struff and Zizou Bergs meet in the quarterfinal at Brussels on Friday. Zizou Bergs is 6-4 across recent matches. Jan Lennard Struff comes in at 6 wins from the last ten.

On paper it's close: comparable ratings, comparable serve numbers, small margins everywhere. This one is close to a coin flip, and the lean toward Bergs is exactly that — a lean.