Bertens said she fist pumped so hard following her upset of Kerber that her arm started to cramp. Sign of a quality fist pump. #WTAFinals— Blair Henley (@BlairHenley) October 22, 2018
Bertens said she fist pumped so hard following her upset of Kerber that her arm started to cramp. Sign of a quality fist pump. #WTAFinals