Kvitova, Halep and more weigh in on Serena controversy

Since the infamous outbursts by Serena Williams at this year's US Open, where umpire Carlos Ramos eventually handed her a game penalty, many players have come out both for and against the 23-time Grand Slam champion.

Caroline Wozniacki has said in Wuhan that she thinks Williams had a point.

"I think everyone has the right to their own opinion," she said. "I think that when you're going into a Grand Slam final, you're fighting for your 24th slam, you're fighting to be on paper, the best player to ever have played the game ... There will be emotions involved."

Fellow American Madison Keys feels that a closer investigation is needed.

"I think overall it was just a really unfortunate experience," Keys said. "I think we should probably look at it more closely and see if there is a bigger issue. If there is, it's something that needs to be addressed."

Williams accused Ramos of sexism, arguing that men receive less penalties then women on tour. On court, she called him a liar and a thief, stemming from Ramos giving her a coaching warning in the second game of the second set. Not everyone has sided with Williams.

Petra Kvitova, Caroline Garcia and world No. 1 Simona Halep gave their thoughts on the controversy. They think that men and women are treated the same by umpires.

"The rules are the rules," Halep said. "I don't see any difference between the men's rules and women's rules, and I think the chair umpires are doing just their jobs...I never had any problems with [Ramos], or with any umpire. I also got fines, when I had to. It's normal."

Kvitova agreed with Halep, saying "I don't see the difference, to be honest...sometimes, when you get the violation, it is just a violation, and it is nothing, at the end of the day."

Kvitova, Wozniacki, Keys Halep and Garcia are all out of the Wuhan Open, with No. 16-seeded Ashleigh Barty the highest-ranked player remaining in the quarterfinals.