South Korea's Choi Ga-on upsets Chloe Kim to win women's halfpipe gold
LIVIGNO, Italy -- Choi Ga-on of South Korea won the gold medal in the women's snowboard halfpipe after recovering from a frightening crash in her firsLIVIGNO, Italy -- Choi Ga-on of South Korea won the gold medal in the women's snowboard halfpipe after recovering from a frightening crash in her firs