Serena Williams picked up two Wimbledon wins on Saturday, beating Julia Goerges in the women's singles before teaming up with Andy Murray to knock Alexa Guarachi and Andreas Mies out of the mixed doubles. Former champions Roger Federer and Rafael Nadal both advanced to the fourth round with respective straight sets wins over Lucas Pouille and Jo-Wilfried Tsonga, while women's top seed Ashleigh Barty beat Harriet Dart for the loss of two games.