British Open leader Brandt Snedeker said a recent round of golf with five-time winner Tom Watson was the catalyst which transformed him from being a no-hoper on links to a potential champion.

The 31-year-old from Nashville lit up the second round of the tournament at Royal Lytham on Friday for a course record-equalling 64 and a halfway total of 130, the equal best of all time at the Open.

That left the American one shot ahead of second-placed Adam Scott, who backed up his first-day 64 with a 67 in the second round.

It was a performance, Snedeker said, that left him in a state of shock, especially as in three previous Open campaigns he had failed to make a single cut or even better 70.

It wasn’t due to any dislike for the peculiar demands of playing on links, said Snedeker, who on the contrary has a particular fondness for seaside golf.

But it was just that he could not get the hang of it.

Enter Watson, one of the all-time greatest proponents of links golf.

“Well, it helped a bunch playing with him,” Snedeker said.

“He told me the first time over here he wasn’t a big fan of links golf. The second time he played he loved it.

“You’ve got to kind of embrace it, realise that you’re going to get good bounces, bad bounces, expect the worst and hope for the best.”

It was certainly the best that Snedeker produced in damp, cold Lancashire conditions on Friday morning.

He opened wth a birdie on the par-three first for the second straight day and reached the turn in four-under 30.

Two more birdies came his way at 11 and 12 and when his game went somewhat off down the rest of the back nine his putter invariably came to his rescue.

In two rounds the American has not allowed a single bogey and, more incredibly, he has yet to go into any of Lytham’s 206 trademark pot bunkers.

In his own words, he said he had been playing “boring golf”, far removed from the aggressive target variety he usually plays back home in the United States.

“I’m shooting away from every pin, trying to put it 25, 30 feet away and hopefully make some putts, which I’ve done the first two days and hopefully plan on doing the next few days,” he said.

It is not the first time that Snedeker has been in the hunt for what would be a first major title, having gone close at the 2008 Masters before South African Trevor Immelman won he finished third.