Former Open champion Ben Curtis believes his six under par 65 on the final day at Carnoustie gave added credibility to his win at Royal St George's four years ago.

When Curtis, who shot up the leaderboard to finish three under, won at Sandwich he was an unknown and ranked 396th in the world.

As a result his victory received less attention and despite two wins on the PGA Tour the following year he disappeared into obscurity in terms of the majors.

This week Curtis got past the cut for the first time since lifting the Claret Jug and he made the most of it on the final day.

"I think it gives my win credibility," said the Ohio 30-year-old, who all week has been wearing Miami Dolphins and New York Giants branded clothing to promote the teams' NFL game at Wembley in October.

"It is a four-day tournament not a one-day tournament but I think playing a round like that on a day like today it should prove that it was a great win

"The last three years have been disappointing for me here. This year my main goal was to make the cut and then after you obviously want to play well and get into contention.

"I didn't think I had a round like that in me. I have been driving it fairly well but my irons have been pretty poor but today I did a shortened warm-up and just went out there and played to see what would happen.

"Whether it was five over or five under - who cares? It was just one of those days where I made a couple of long putts which got things going my way."