• Federer suffers 6-4, 7-6 (7-5) defeat at hands of Frenchman• Defending champion Stanislas Wawrinka routed 6-1, 6-2 by Grigor Dimitrov• Monfils and Dimitrov will meet in quarter-finalsRoger Federer has been knocked out of the Monte Carlo Masters in the third round by Gaël Monfils, on a bad day for Switzerland as Stanislas Wawrinka also lost.Monfils’ 6-4, 7-6 (7-5) victory was his second consecutive win on clay over the 17-times grand slam champion, following his straight sets victory during last year’s France-Switzerland Davis Cup final.