Doubles stars Hingis, Mirza talk shoes and competition

Mirza owns 300 pairs—”it’s a sickness,” she says. (AP)

Martina Hingis and Sania Mirza have preyed on most everyone who’s stepped on court against them in 2015. Earlier this week, they clinched up the season-ending No. 1 ranking in WTA Tour doubles. And for all their prowess and court sense in the heat of battle, they also have remarkable chemistry and knowledge of each other away from what they do best.

In a new clip from the WTA, the two gigglers get to the business of discussing shoes (Mirza owns 300 pairs; “It’s a sickness,” she says) and their competitive natures (“We’re both pretty bad losers”).