Photo: Getty Images Three-time Olympic gold medalist Shaun White officially announced his intention to retire after the completion of the 2022 Beijing Winter Olympic Games. White, 35, is the most decorated snowboarder in history, having won his first halfpipe gold at the 2006 Turin games at the age of 19 and his first two Winter X Games gold medals in the superpipe and slopestyle in Aspen at the age of 16 at the 2003 Aspen Winter X Games. In total, White has won 21 medals in snowboarding, including the three gold medals in the halfpipe at the 2006 Torino, 2010...