A rising star on Canada's junior water polo team has apologized for his role in the Stanley Cup riot, according to an ESPN.com report. A sobbing Nathan Kotylak told a local TV station that what he did was "dumb" and he's prepared to face the consequences. He surrendered to police after social media sites posted pictures showing a youth stuffing a burning rag into the gas tank of a police car. The violence in Vancouver followed the Canucks' loss to the Boston Bruins on Wednesday.