Halfpipe World Cup leaders Xuetong Cai and Ryo Aono win Calgary event

Xuetong Cai (CHN) and Ryo Aono (JPN) have won the season?s fourth halfpipe contest of the 2011 LG Snowboard FIS World Cup, which wrapped up today?s double event at Canada Olympic Park in Calgary, thus extending their lead in the race for the Crystal Globe. In the women?s final, Cai (24.9 points) ....