Kenya superstar Collins Injera celebrated his 200th try on the World Sevens Series by taking out a permanent marker from his sock and signing the ball.

It was a pre-planned move - you can only guess how uncomfortable it must have been to have that marker next to his leg as he waited for his 200th try - but he then walked over to sign a camera. It is a practise seen in tennis but little did Injera know, the players sign a protective cover instead of the lens itself. The lens - now permanently marked with Injera's autograph - costs in the region of £60,000...