From the ATP Cincinnati Masters tournament, Roger Federer has withdrawn himself. Federer said "I am very sorry to pull out of the Western & Southern Open as I always enjoy playing here," "Cincinnati has some of the best fans in the world and I am sorry I will miss them.Unfortunately, I tweaked my back in Montreal and I need to rest this week," he added. ALSO READ: Svitolina defeats Wozniacki to clinch Rogers Cup title Sri Lanka Cricket president Thilanga Sumathipala stated ahead of tour to Pakistan Sharapova withdrew from the WTA tournament in Cincinnati