Roger Federer survives major scare as injury forces Adrian Mannarino to retire in fifth set

The Frenchman hurt his right knee in a fall during the fourth set and had to call it quits

Roger Federer checks on Adrian Mannarino after his fall on Centre Court (Adam Davy/PA)

Roger Federer survived a major scare thanks to an unfortunate injury to opponent Adrian Mannarino in the first round at Wimbledon.

The Frenchman was two sets to one up and a break down in the fourth against a rusty Federer when he slipped under the Centre Court roof and hurt his right knee.