Collin Morikawa throws away big lead as Viktor Hovland wins Hero World Challenge

Viktor Hovland carded a closing 66 to win the Hero World Challenge in the Bahamas (Fernando Llano/AP)

Collin Morikawa squandered a five-shot lead and the chance to become world number one as Viktor Hovland emerged victorious from an extraordinary final round of the Hero World Challenge.

Hovland began the day six shots off the pace but carded a closing 66, which included back-to-back eagles on the 14th and 15th, at Albany to secure his third title of the season.