Juan Martin del Potro fired a menacing warning to those already writing Rafael Nadal's name on the French Open trophy with a bludgeoning 7-5 6-4 6-1 third-round defeat of Spanish claycourter Albert Ramos-Vinolas on Saturday.from Sports News: Cricket News, Latest updates on Tennis, Football, Badminton, WWE Results & more https://ift.tt/2Lice3a