Rafael Nadal slips to shock defeat in Rio . Defending champion beaten in semifinals by Nadal . 12th semifinal defeat on clay in seven matches for Fabio Fognini . Fabio Fognini wins WTA tournament in Dubai .
Rafael Nadal slips to shock defeat in Rio . Defending champion beaten in semifinals by Fabio Fognini . First semifinal defeat on clay in 52 matches for Nadal . Simona Halep wins WTA tournament in Dubai .