A spot in the next round is at stake on Saturday, when Madison Keys goes up against Victoria Mboko in the French Open round of 32. Madison Keys brings a 4-match winning streak into this one, 8-2 across the last ten. Victoria Mboko has won 7 of the last 10.

The rivalry is dead level: 1-1 across 2 matches. On clay specifically it reads 1-0 Keys — worth more than the overall number this week.

Madison Keys simply rates much higher on clay, and our number follows from it. Mboko needs several things to break right at once; the percentages say they usually don't.