Ruka Hirano led a Japanese sweep of the men's snowboarding halfpipe podium at a World Cup event Saturday in Aspen, Colorado.The 22-year-old Hirano, last season's overall World Cup halfpipe winner, scored 93.25 points on his third and final run. It was his sixth career World Cup victory and first in two seasons."It's so good to be on the top of the podium," Hirano said. "I was able to stay calm and perform. My success ratio for the triple cork is getting higher. I'll try to improve further by the world championships in March."Reigning Olympic champion Ayumu Hirano finished second with 89.50.…READ FULL ARTICLE