Highlights of 2019 ATP Mexican Open tennis tournament

John Isner of the United States serves during the men's singles second round match between John Isner of the United States and Sam Querrey of the United States at the 2019 ATP Mexican Open tennis tournament in Acapulco, Mexico, on Feb. 27, 2019. John Isner won 2-0. (Xinhua/Xin Yuewei)