Spieth to take three-shot lead into British Open final round

Rory McIlroy's caddie saved his British Open with the simplest pep talk ever

Kuchar started the day two behind compatriot Spieth, but closed to within one at the 2nd, before dropping back to two adrift with a bogey at the 4th. Spieth was 9 under through 13, while Kuchar was 7 under, three ahead of the nearest contender, Grace.

"Extremely pleased", said Spieth of his position, having moved to 11-under-par in his bid to add this title to his 2015 Masters and US Open triumphs. "On a Saturday with a lead in a major, that's as good as I can ask for".

The London-based oddsmaker Ladbrokes has Spieth as the 1-to-4 favorite to win the tournament.

Following Kucher into the bunker from his tee shot on the 17 however, the grin was quickly wiped off Spieth's face as his opponent closed the lead to just two again.

"He said, 'You're Rory McIlroy". I bounced back well on the ninth but the six on the 10th was a real kick in the teeth.

When it comes to who the home crowd will probably be putting their money on heading into the weekend, look no further than Ian Poulter at 15/1. He was five shots off the pace, tied with Branden Grace, who broke the major championship scoring record with a 62.

Some of the other top players in the world jumped up the leaderboard on moving day, none more so than World No.1 Dustin Johnson, who shot a 64 to move to -3. He had a chance for an eagle at the par-5 15th, but missed an 8-footer and settled for a birdie.

Forty-two golfers posted under-par scores in the third round, which was contested in benign conditions and bright sunshine, a complete reversal from the cold wind and driving rain the golfers faced a day before, when the average score was more than 75 and eight scores in the 80s were carded.

"Whatever", replied McIlroy, who had bogeyed four of his first five holes and was about to drop another shot at No. 6.

A double bogey at the 16th gave Spieth a three-shot cushion.

Jordan Spieth sat in the Royal Birkdale media centre on Tuesday and oozed nothing but confidence about the 146th Open Championship.

As well as he's playing, Jordan Spieth could have a grip adjustment in his future. He wants to put his hands on the Claret Jug and lift it high and claim that victory, and Spieth has been playing the kind of game through fair weather and foul that should get him across the finish line. It's so much easier to putt with that wind, let alone hit shots tee to green.

A total of 31 players have hit rounds of 63 in a men's major before, but after coming off the course, Grace admitted he did not realise he had made history.

And yet Grace, the 29-year-old ranked 35th in the world, later admitted he had been blissfully unaware of what he had achieved until his caddie informed him after he crucially saved par on 18.

Kuchar mixed four bogeys with three birdies to keep the morning challengers at bay. He said sometimes it helps not to know records. More than half the field broke 70 on a course that was there for the taking.

The Northern Irishman could only shoot a one-under-par 69 in largely favourable conditions in the third round at Royal Birkdale as he crawled forward to two-under overall for the championship.

Every stroke is important, as a lot will be on the line in the final round at Royal Birkdale. It will be his third time playing in the final group at a major.

"There is nothing like the amphitheatre of walking down the 18th fairway at The Open Championship".

After a round of media interviews, he was back working in the shop. He still shot 65, his best score ever in a major.