Rafael Nadal leads the series with Roger Federer, 23-11, and won nine of 11 matches in major tournaments; Federer won last meeting, 6-3, 5-7, 6-3, in Basel.
Maria Sharapova is 53-4 on clay since 2012; Simona Halep did not drop a set en route to her first Grand Slam final, but the No. 4 seed is 0-3 against Sharapova.