Dhaka, Dec. 11 -- Women's world number one Aryna Sabalenka has spoken out against transgender women competing in professional tennis, describing their participation as unjust to female athletes.

The comments come ahead of the much-anticipated "Battle of the Sexes" exhibition contest against Wimbledon finalist Nick Kyrgios, scheduled for December 28 at Dubai's Coca-Cola Arena.

When asked if transgender athletes should be eligible to compete in the women's category, the Belarusian said: "That's a tricky question. I have nothing against them."

She added: "But I feel like they still got a huge advantage over the women and I think it's not fair on women to face basically biological men."

The four-time Grand Slam champion said: "It's not fa...