Serena Williams suffered a straight-sets defeat on the day of her 1,000 career match at the Italian Open on Wednesday. The 23-times Grand Slam champion was beaten by Argentina's Nadia Podoroska, who claimed a 7-6 (8-6), 7-5 win in almost two hours in the second round in Rome. Podoroska, a French Open semi-finalist, next faces Croatia's Petra Martic in the third round