A spot in the next round is at stake on Tuesday, when Tamara Korpatsch goes up against Victoria Jimenez Kasintseva in the Hamburg round of 32. Tamara Korpatsch is 5-5 across recent matches. Victoria Jimenez Kasintseva limps in on a 7-match losing skid, just 2 wins in 10.
There is no history here: this is their first tour-level meeting.
Tamara Korpatsch simply rates much higher on clay, and our number follows from it. Kasintseva needs several things to break right at once; the percentages say they usually don't.