Elise Mertens is a Belgian professional tennis player. She became the world No. 1 in women's doubles on 10 May 2021, the third Belgian to hold a top ranking in either singles or doubles. She has won 32 WTA Tour-level titles. From Wikipedia
The world No. 1 defeated Elise Mertens in straight sets, challenging an umpire's call by photographing a ball mark, and will face Jasmine Paolini next.