Shane Lowry slips up as Dustin Johnson wins US Open amid chaos

Dustin Johnson survived a farcical climax to the US Open to win his first major title as Shane Lowry let slip a four-shot lead at Oakmont.

Johnson carded a closing 69 to finish four under par, but only after belatedly being given a one-shot penalty following an incident which left players, officials and spectators unsure of his score with just seven holes to play.