Dustin Johnson survived the longest round and 40 mph gusts with one last birdie for a 3-under 69 and a one-shot lead in the British Open.

The morning wind was so strong it blew golf balls on the green and led to a delay of nearly 10 hours. It forced the first Monday finish in the British Open in 27 years.

Johnson, coming off a crushing loss at the U.S. Open, was at 10-under 134.

Danny Willett got the day off and was one shot behind. He finished his 69 on Friday. Paul Lawrie played bogey-free on the inward nine and shot 70 to finish two shots back.

Jordan Spieth, going for the third leg of the Grand Slam, three-putted five times and managed a 72. He was five behind.