Serena Williams: John McEnroe believes she would struggle on men's circuit

Serena Williams would struggle to be in the world's top 700 if she was on the men's circuit, according to seven-time Grand Slam champion John McEnroe. And the male player, ranked 701 in the world, believes he could beat her too. Speaking to US radio station NPR, McEnroe said of world number one Williams, who has won an Open-era record 23 Grand Slams: "If she played the men's circuit she'd be, like, 700 in the world."