The moment tennis star lost his cool with Roger Federer's wife - but did she call him a 'cry baby' before he played crucial point?

• Roger Federer doesn't wear the trousers in his house - wife Mirka is the boss in charge of his look, fashion and even his haircut

Video has emerged of the moment Stan Wawrinka has an on-court row with Roger Federer's wife - believed to be prompted by her calling him a 'cry baby'. It comes after the revelations that Federer and Wawrinka had a furious 10-minute row in a private room backstage at the O2 Arena after Saturday's Barclays ATP World Finals semi-final match. They were both determinedly putting on a united front for the Swiss Davis Cup team - just as the moment that caused their weekend fallout in London appeared to be identified.