Patrick Mouratoglou: ‘Serena and I had a few fights about her weight’

The French coach on his partnership with Serena, why he parted ways with Naomi Osaka and how to break the Sinner-Alcaraz duopoly

Patrick Mouratoglou was notably absent from this year's US Open. Since his breakout advising Marcos Baghdatis, who he guided to the Australian Open final in 2006, Mouratoglou has distinguished himself as a tennis guru - with pros and prospects making the pilgrimage to his academy on the French Riviera. But it was his partnership with Serena Williams, who won 10 of her 23 grand slam singles titles after pairing with the Frenchman, that helped cement Mouratoglou as a coaching great.

In between touring clients at the moment, Mouratoglou caught up with me near the end of the US Open to talk about Naomi Osaka's resurgence, Williams's weight loss and what it will take to break Carlos Alcaraz and Jannik Sinner's duopoly in the men's game.

Interview has been edited and condensed for clarity. Patrick Mouratoglou is working with Motorola's Behind the Icons campaign.