French Open - Roger Federer defended over towel row with umpire by Mats Wilander - 'Big mistake!'

French Open: Roger Federer is backed over the bizarre towel row he had with the umpire and Marin Cilic by Mats Wilander - 'Big mistake!' Watch all the action from the 2021 French Open live on Eurosport, eurosport.co.uk and the Eurosport app with 13-time champion Rafael Nadal eyeing a remarkable 14th title and 2020 Roland Garros sensation Iga Swiatek aiming to replicate her stunning triumph.