Serena Williams says she is prepared to face Andy Murray after the world number two suggested facing the five-time Wimbledon women's singles champion.
Murray, in his latest BBC Sport column, said he believes people would be interested in watching men play against women to see how the styles match up.
He described Williams as an "incredible" player and said he would be prepared to face her in Las Vegas.
Williams said: "I doubt I'd win a point, but that would be fun."
Murray said he had been challenged by someone on Twitter to take on Williams, who is number one in the women's rankings.
"I'd be up for it, why not?" he added.
Williams, 31, is five years older than 2012 US Open winner Murray, but would not back away from the challenge of facing the Scot.
It would not be the first time leading men and women players have faced one another.
In 1992 two-time Wimbledon singles champion Jimmy Connors overcame Martina Navratilova 7-5 6-2 in Las Vegas. Nineteen years earlier Billie Jean King brushed aside Bobby Riggs 6-4 6-3 6-3 in Houston.
"He wants to play me? That would be fun," Williams said after sweeping past French teenager Caroline Garcia 6-3 6-2 in round two at Wimbledon on Thursday.
"He's probably one of the top three people I definitely don't want to play.
"But, yeah, maybe we can have a little bit of a showdown."
Should an exhibition game between the Murray and Williams happen, it would be a match between the two 2012 Olympic gold medal singles winners.
When the idea was put to world number one Novak Djokovic, the Serb said it would be "a lot of fun to watch".