Tuesday 7 July 2015 22:13, UK
Serena Williams says there is "a huge conversation" to be had about the scheduling of women's matches at mixed events.
Caroline Wozniacki criticised the Wimbledon organisers after her fourth-round exit on Monday, claiming they applied "different" standards when scheduling men's and women's ties.
And speaking after victory over Victoria Azarenka booked her semi-final spot, five-time champion Williams agreed, broadening the criticism to include tournaments worldwide.
"We're still fighting on that," she said. "We've made some progress but hopefully we'll keep making more progress.
"We made progress making sure that women have more featured matches. It's just a little bit at a time. Hopefully we'll get to the point where we'll even have more featured matches.
"I was practising next to Rafael Nadal, and he grunts louder than me, and nobody notices that, why? I don't understand why."
"I don't think it's limited to Wimbledon. We have this problem at a lot of different tournaments. Pretty much most of the tournaments that are both men and women. So I think it doesn't start here. It's a huge conversation that we have to have."
Azarenka had a gripe of her own about perceived double standards, taking issue with the Centre Court crowd for laughing as she and Williams shrieked during rallies.
"It's so annoying, because guys grunt," the Belarussian said. "I was practising next to Rafael Nadal, and he grunts louder than me, and nobody notices that, why? I don't understand why.
"Both women on the court were trying their hardest and giving everything, and they make noises. Is that a problem for tennis? It happens in every sport.
"So I think maybe it's time to just put it aside and not talk about it all the time because this is not what is important when there are two players on the Centre Court.
"We've got to look a little bit past that and see, 'oh, my God, Serena played 24 aces'. Look at the good stuff, stop bringing this ridiculous stuff. Let's put aside the noise and how she looks, and look at the game.
"I think they might have had a little too many Pimm's or whatever. When people are drinking, every time the announcer says 'make sure you hydrate yourself', I think he means with water, not alcohol!"
