Dylan Armstrong of Canada competes in the men's shot put event during the IAAF Diamond League athletics meeting at Bislett Stadium in Oslo, on June 7, 2012. AFP PHOTO / SCANPIX NORWAY / Cornelius Poppe
Canada's Dylan Armstrong competes in the men's shot put final at the Pan American Games in Guadalajara October 25, 2011. Armstrong won the gold medal. REUTERS/Desmond Boylan
Canada's Dylan Armstrong competes in the men's shot put final at the Pan American Games in Guadalajara October 25, 2011. Armstrong won the gold. REUTERS/Desmond Boylan
Silver medalist Dylan Armstrong of Canada reacts on the podium after the men's shot put event at the IAAF World Championships in Daegu September 2, 2011. REUTERS/Lee Jae-Won
Dylan Armstrong (L) of Canada, David Storl (C) of Germany, and Andrei Mikhnevich of Belarus pose with their national flags after the men's shot put final at the IAAF World Championships in Daegu September 2, 2011. Storl won the gold medal, Armstrong the silver and Miknevich the bronze. REUTERS/Phil Noble
Dylan Armstrong of Canada competes in the men's Shot Putt competition during the Diamond League athletics competition at the Bislett Stadium in Oslo June 7, 2012. REUTERS/Dylan Martinez
Gold medallist Canada's Dylan Armstrong (C), silver medallist Cuba's Carlos Veliz (L), and bronze medallist Argentina's German Lauro stand at the podium with their medals after the men's shot put final at the Pan American Games in Guadalajara October 25, 2011. REUTERS/Jorge Silva
Canada's Dylan Armstrong competes to win the men's shot put competition at the IAAF World challenge Zlata Tretra (Golden Spike) athletics meeting in Ostrava on May 25, 2012. AFP PHOTO / ROBERT MICHAEL
Dylan Armstrong of Canada reacts during the men's shot put final at the IAAF World Championships in Daegu September 2, 2011. Armstrong won the silver medal. REUTERS/Phil Noble