Serena Williams has opened up in her first interview since accusing a US Open umpire of sexism, insisting she did not conspire to cheat with her coach.

Williams clashed with umpire Carlos Ramos after she was given a warning for receiving coaching from her box in the second set of the final, describing the tennis official as a “thief” and a “liar”.

Discussing the incident on Australian television show The Sunday Project, the 23-time Grand Slam champion asserted she did not receive help from coach Patrick Mouratoglou during her defeat to Naomi Osaka.

Williams said of Mouratoglou: “He said he made a motion, I don’t understand what he was talking about. We’ve never had signals.”

She accused the umpire of sexism because he treated her harshly, and said that a man wouldn’t have received the same treatment.

“I just don’t understand,” she said. “If you’re a female you should be able to do, even half, of what a guy can do.”

Mouratoglou admitted he was coaching Williams, but said she didn’t look at him.

He added that Osaka’s coach was also coaching her during the match.

Serena Williams was penalised by the umpire and handed a $17,000 fine for three code violations.

source: uk.sports.yahoo.com