Former doubles world No 1 Rennae Stubbs has claimed Coco Gauff’s serve is going to be “a problem for her forever” as she ...

STUTTGART, GERMANY (AP) _ Results Monday from Porsche Tennis Grand Prix at Porsche Arena (seedings in parentheses): Jelena Ostapenko, Latvia, and Dayana Yastremska, Ukraine, def. Nastasja Schunk and ...