Megan Keller scores in overtime to clinch Winter Olympic gold for the United States in a last-gasp 2-1 win over great rivals Canada.

Team USA and Canada have clashed in six of the seven Olympic gold-medal matches since women's hockey made its Olympic debut in 1998.

Megan Keller scores in overtime to clinch Winter Olympic gold for the United States in a last-gasp 2-1 win over great rivals Canada.