Learn from Iga Swiatek, Marta Kostyuk and Ekaterina Alexandrova on how to stay warm during tennis matches without sacrificing performance.

No.15 seed Marta Kostyuk came from a break down in the third set to defeat Elise Mertens in the first round of the Cincinnati Open -- her second win over the Belgian in three meetings. Why not watch ...

No.4 seed Coco Gauff cruised to her eighth straight win on tour with an emphatic 6-4, 6-1 victory over No.13 seed Marta Kostyuk at the Dongfeng Voyah · Wuhan Open. Gauff needed just 61 minutes to ...