Novak Djokovic (SRB) falls during the semi-final of the Gentlemen's Singles on Centre Court. The Championships 2019. Held at The All England Lawn Tennis Club, Wimbledon. Day 11 Friday 12/07/2019. Credit: AELTC/Ian Walton

A Ball Boy on Centre Court. The Championships 2019. Held at The All England Lawn Tennis Club, Wimbledon. Day 2 Tuesday 02/07/2019. Credit: AELTC/Ian Walton

Angelique Kerber (GER) hits a tweeter through her legs during play in the first round of the Ladies' Singles on Centre Court. The Championships 2019. Held at The All England Lawn Tennis Club, Wimbledon. Day 2 Tuesday 02/07/2019. Credit: AELTC/Ian Walton