Watch Roger Federer join Coldplay on stage in Zurich

Coldplay were joined on stage by tennis legend Roger Federer at a recent concert in Zurich – check out footage of the moment below.READ MORE: The NME Big Read – Coldplay: “This is our period of having no fear”Chris Martin and co. were performing at the Letzigrund Stadium in the Swiss city on Sunday (July 2) as part of the European leg of their ‘Music Of The Spheres’ world tour.
Towards the end of the 22-track set, Federer took to the stage to play the shaker a