Serena Williams pulls out of Cincinnati due to back injury Nick Kyrgios lands heavy ATP punishment after losing temper in Cincinnati Rublev, who had already knocked out Stan Wawrinka at the tournament, broke the seven-time Cincinnati champion twice in the first set, with some exquisite shots keeping the 20-time Grand Slam winner out of his rhythm.Federer improved in the second set, but it was Rublev who forced the first crucial break to take a 4-3 lead, with the 21-year-old holding his nerve to serve out a famous victory. Related News It was a peak performance from @AndreyRublev97.: @TennisTV | @CincyTennis pic.twitter.com/GCyP0zxAxq— ATP Tour (@ATP_Tour) August 15, 2019Federer started badly by losing his opening service game and while he converted a third break point to get back on level terms, Rublev repeated the trick to go 3-1 ahead.Federer rallied to hold serve but could not handle Rublev’s power, the Russian wrapping up the first set within 29 minutes.Swiftly realizing he had to up his level, Federer was clinical on serve at the start of the second set, though he could not force an opportunity to break his opponent. Roger Federer slumped out of the Western & Southern Open Thursday, suffering a shocking 6-3, 6-4 defeat to qualifier Andrey Rublev.A finalist in Cincinnati last year, Federer had breezed past Juan Ignacio Londero in the previous round but the 38-year-old turned in a below-par performance on Thursday. The world No. 70 took full advantage, eventully breaking Federer to edge himself 4-3 ahead.Federer held his opponent off in the next game, yet Rublev did not let the opportunity of an upset slip from his grasp, clinching victory on the first of two match points before shedding tears on court.Rublev will now face Daniil Medvedev in the quarterfinals after the world No. 8’s win over Jan-Lennard Struff, while Federer’s exit paves the way for defending champion Novak Djokovic to retain his crown.