
Alexander Zverev of Germany returns a shot to Milos Raonic of Canada during their quarterfinal match of men's singles at the Italian Open tennis tournament in Rome, Italy, May 19, 2017. Alexander Zverev won 2-0. (Xinhua/Jin Yu)

Alexander Zverev of Germany returns a shot to Milos Raonic of Canada during their quarterfinal match of men's singles at the Italian Open tennis tournament in Rome, Italy, May 19, 2017. Alexander Zverev won 2-0. (Xinhua/Jin Yu)