1B Matheson Duff,13, (Guelph, Ont.) of the Guelph Royals took part in the ninth Annual POWER SHOWCASE at Marlins Park in Miami.
Duff hit nine home runs, including a 413-foot blast, placing seventh of 55. He hit another two home runs over 400 feet.
He scored on a ground ball as the West beat the East 9-7 in the Future Stars All American Classic.
Duff was the starting and winning pitcher leaving after three innings with a 5-1 lead, striking out four and allowing three base runners: giving up two walks and one hit.