Roger Federer stopped in Wimbledon quarterfinals; Rafael Nadal slips through

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Federer is upset by No. 8 seed Kevin Anderson, who won, 2-6, 6-7 (7-5), 7-5, 6-4, 13-11, to advance to his first Wimbledon semifinal. Nadal needed five grueling sets to beat Juan Martin del Potro. American John Isner and three-time champion Novak Djokovic also moved on.