Switzerland's Roger Federer returns against Bulgaria's Grigor Dimitrov during their men's singles fourth round match on the seventh day of the 2017 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 10, 2017. Federer won the match 6-4, 6-2, 6-4. Pic/AFP

Evergreen Roger Federer kept his quest for a record eighth Wimbledon crown on track on Monday, dispatching Grigor Dimitrov 6-4 6-2 6-4 in a match-up of classic styles that had the purists purring.