Aryna Sabalenka is the world's top-ranked female tennis player, but the 27-year-old admitted to a "weakness" that might have her coaches scratching their heads.

World No.1 Aryna Sabalenka has risked alarming her coaching staff with a candid admission over her nutrition. The 27-year-old is currently competing at the Cincinnati Open, and yesterday beat Spaniard Jessica Bouzas Maneiro in straight sets to ease into the last-eight.

Max Mirnyi won the 1998 U.S. Open and Wimbledon mixed doubles titles with Serena Williams and lost in the finals of the 1999 Australian Open. With Williams. Miryni joined the staff of Aryna Sabalenka in January.