Monica Niculescu is a Romanian professional tennis player. She has been ranked by the Women's Tennis Association as high as 28 in singles and 11 in doubles. Niculescu has won several titles: three singles and ten doubles titles on the WTA Tour, one singles and two doubles titles on the WTA Challenger Tour, as well as 19 singles and 22 doubles titles on the ITF Women's Circuit.

Chan Hao-ching, also known as Angel Chan, is a Taiwanese professional tennis player. She is primarily a doubles specialist, having won twenty-one WTA Tour, two WTA Challenger and six ITF titles in that discipline. Chan reached the final of the mixed-doubles competition at Wimbledon with Max Mirnyi in 2014, her first major final. She reached two more finals in 2017, the Wimbledon women's doubles with Monica Niculescu, and the US Open mixed doubles with Michael Venus.