Charley Hoffman opens up four-shot lead on day one of 81st Masters

Unheralded American Charley Hoffman has taken a four-shot lead amid blustery conditions on day one of the 2017 Masters at Augusta National.

The 40-year-old made light of the high winds to make 65 and surpass compatriot William McGirt's earlier 69.

Lee Westwood is third on two-under, one ahead of fellow Englishmen Justin Rose, Andy Sullivan and Matt Fitzpatrick.

Meanwhile, Rory McIlroy atoned for a poor outward nine with three birdies in four holes from the 13th as he salvaged a level-par 72.

Jordan Spieth, the 2015 champion, carded 75, while defending champion Danny Willett of England started his defence with a double bogey and a bogey before fighting back to finish one-over-par.

The action in Augusta had begun on a sour note when world number one Dustin Johnson pulled out on the first tee after injuring his back when slipping on the stairs at his rental house on Wednesday.