Vancouver, BC (SportsNetwork.com) - Vasek Pospisil beat Go Soeda in the decisive fifth rubber as Canada topped Japan in the first round of the Davis Cup.

The 24-year-old Pospisil won 7-5, 6-3, 6-4 in Vancouver to seal the tie. Soeda was nominated in place of Tatsuma Ito prior to the start of play.

Canada entered Sunday's play with a 2-1 lead over Japan, but U.S. Open runner- up Kei Nishikori defeated Milos Raonic.

In a rubber that lasted just over three hours, Nishikori prevailed 3-6, 6-3, 6-4, 2-6, 6-4. Raonic was up in the deciding set, but Nishikori won three games in a row.

Canada will play Belgium in July's quarterfinals.