Pedro Martin was the hero for Spain, crossing the line after the scores were tied 12-12 after normal time whilst tries from Conor Trainor and Taylor Paris scored tries in Canada's 14-12 win against Portugal.
Earlier Spain has beaten Tonga 19-7 whilst Japan's Lote Tuqiri snatched a dramatic sudden death extra time victory against hosts Hong Kong in the quarters.

Sean Duke scored his 50th and 51st World Series tries as Canada beat Russia 24-7 before Goncalo Foro's two tries gave Portugal a dramatic 21-17 victory against Zimbabwe after the buzzer had sounded.