Women's tennis in 'manliness' row: World's No 1 and 2 come under fire from rival for their 'high testosterone' - before Aryna Sabalenka appears to fire back after being labelled a 'big' player

Kostyuk said that world No 1 Aryna Sabalenka and No 2 Iga Swiatek are 'much bigger' and 'much stronger' than her and her peers slightly lower down the rankings. She is the same height as Swiatek.