All over: Zheng Qinwen embraces Alize Cornet after ending the Frenchwoman's career on Tuesday

Novak Djokovic begins the defence of his French Open title at Roland Garros on Tuesday, confident his Grand Slam pedigree will help turn around his lacklustre season as tournament chiefs battled a frustrating five-hour rain delay.

Defending champion Novak Djokovic shrugged off his recent troubles to sweep to his 93rd career win at the French Open on Tuesday, extending his run of first round Roland Garros victories to a perfect 20.