Tennis pro: "Women should play five sets"

Article here. Excerpt:

'Andy Murray insists he is ready to go five sets when he takes on the in-form Stanislas Wawrinka in their US Open quarter-final on Thursday - but believes there is no reason why women should not play the same if they are to earn equal prize money at grand slams.

Defending champion Murray had to come from a set behind to defeat Denis Istomin in his last 16 match at Flushing Meadows, and now faces the confident ninth seed Wawrinka - who took Novak Djokovic to five sets in a five hour epic at the Australian Open in January.
...
Speaking to the New York Times, Murray stated either the men should drop to three sets or women should play over five in order to justify equal pay.

"It isn't about it being inferior. As I see them, they're two different sports," Murray told the New York Times. "It's not like the 100 metres at the Olympics, not because they're not running the same speed as the men.

"It's just because we play five sets. I'm not saying the men work harder than the women, but, if you have to train to play five sets, it's a longer distance. It's like someone training to be a 400m runner and someone training to be a 600m runner.'