Andy Murray and Serena Williams aim to defend their Olympic gold medals, while world No. 1 Novak Djokovic launches his quest for his first Olympic gold.

The Williams sisters are both playing for a fifth gold medal and for a place in history as the first players to win medals at four different Olympic Games.

Watch: Five Facts For Rio

Who are the top contenders in Rio?

Tennis Now editor Richard Pagliaro and former WTA player and journalist Andrea Leand join Prime Sports Network host Greg DePalma to preview the top story lines from the Rio Olympics and discuss the changes fans can expect at the 2016 US Open as the USTA continues its $600 million renovation of the National Tennis Center.

Listen here: