A spokesperson for the Women's Tennis Association (WTA) has told CNN that 96% of the WTA’s top 100 players are now fully vaccinated.
Full vaccination equated to two doses where appropriate, added the spokesperson. The figure was previously 85%.
The issue of vaccinations in professional tennis has shot to prominence amid controversy surrounding men's world number one Novak Djokovic.
The Serb had his Australian visa canceled last week after authorities determined he did not qualify for a medical exemption from the rule that all arrivals to Australia must be vaccinated against Covid-19.