Bouchard started her season at the Hopman Cup, representing Canada alongside Vasek Pospisil. She lost her first match against the Czech Republic's Lucie Šafářová, and Canada went on to lose the tie. Then, in the tie against the United States, Bouchard beat Serena Williams, while Pospisil beat John Isner to give Canada the win. They defeated Italy in the last tie, but despite the win, they finished second in the group and were eliminated. At the Australian Open, Bouchard lost in the quarterfinals to Maria Sharapova in straight sets. On 5 February 2015, Bouchard began working with Sam Sumyk, who had previously coached Victoria Azarenka to Grand Slam success.