Roger Federer looking strong as he cruises past Mischa Zverev

Roger Federer joined his fellow title favourites in cruising into the fourth round of Wimbledon with victory over Mischa Zverev.

Defending champion Andy Murray is the only one of the big four to have been tested so far, and Federer matched Novak Djokovic and Rafael Nadal in reaching the last 16 without having dropped a set.