And, as the big guns head for the clubhouse, it's time for me to have one at the 19th hole too. Mike Henson is here to talk you through the remainder of the first round.

Now then, important times for a couple of big players. Rory McIlroy, after birdieing 15, is two under with two to play. Adam Scott, the defending champion, is one off the lead going down the last.

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The first father and son to play the Masters had contrasting opening rounds. Craig Stadler, 60, champion in 1982, said: "I played like a moron," after a 10-over-par 82. "It was ugly. My whole game stinks."

Kevin, who is making his debut at the age of 34, mixed four birdies with two bogeys in his two-under-par 70 to set the early clubhouse lead. "I'll take two under all day every day the rest of my life," he said.

Stadler junior is hoping to become the first man since Fuzzy Zoeller in 1979, to win on his Masters debut. "You got to believe regardless, but it's just one day and I obviously want to do it three more times, but just happy with day one," he added

I'm not surprised that Bill Haas is ecstatic. Before today, his combined score in the first round of all the majors played in his career was +31.

Bill Haas, who has the outright lead in the clubhouse after shooting a 68: "I made some putts early on. I birdied four, which feels like an eagle, got going there. The putter was hot, I made some nice shots coming into the stretch. I had never broken 70 before. There is a lot of golf left but ecstatic with today."

Wonderful recovery from Oosthuizen, who had to take a drop after going into the drink at 12. Dressed in purple that makes him look a bit like a Quality Street, the South African pitches to within three feet of the pin and should escape with a bogey.

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Sweden's Jonas Blixt, who finished on two under on his Masters debut: "I tried to downplay the pressure of seeing my name at the top, there is so much more golf to play and so much can happen.

"You have to focus on where you are and stay in the present despite how much fun it is to see your name at the top of the leaderboard. Out there you learn a lesson on every hole, I'll have to go out and learn some more tomorrow."

That poor tee shot at 18 has ultimately cost Brandt Snedeker a shot on his final hole of the day. He drags his blond locks to the clubhouse on two under, two behind leader Bill Haas. Another of Haas's challengers, Louis Oosthuizen, has gone into the water off the tee at 12, just as Adam Scott did earlier.

Rory on the tee at 16. Par three, drifting way wide of the pin, only just clearing the water. Strange shot. Question, is golf the sport that has most players that you can just refer to by one name? Tiger. Rory. Seve. Jack. Monty. Luuuuke. Sergio. Think on.

kevinturner:, external Would love to see Sergio win. Great from tee to green only his putting lets him down but his putter on fire in last four weeks.

Chris Cowan:, external B2B birdies for Sergio, is this his year? Doubt it, been asking that for the last 10 years.

The British challenge is not exactly boiling over just yet, with late-starter Lee Westwood one over for his round after three holes. He is five off the pace, with Northern Ireland's Rory McIlroy two under par and Graeme McDowell in the clubhouse level having been two over on the back nine. Scotland's Stephen Gallacher has bogeyed three holes in a row and is now even par on the 13th.

Elsewhere, a double bogey on the sixth has hampered Luke Donald who is three over and there are more black numbers for Justin Rose (+3), Ian Poulter (+3) and Darren Clarke (+4).

Rob Hodgetts
BBC Sport at Augusta National

Ian Poulter, on what he needs to do on Friday to rectify the situation after carding a four-over 76.

"Play golf tomorrow, but don't make as many mistakes," he said. "Is that easier said than done?" someone asks. "It is actually simple, when you look at it that way.

"I don't need to make a couple of silly errors and if I do that, then I'll be just fine. I'm playing good enough, so I have to stay positive, because I'm actually hitting the ball really nicely. My scores are not reflecting that.

"So as frustrating as it is, I need to stay focused and do what I know I can do around this golf course and do that over the next three days."

Official Masters on Twitter:, external Jimmy Walker becomes the third Masters rookie to shoot a 2-under-par 70 in the first round.

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Phil Mickelson is on the sixth hole where he lost a dollar on Tuesday. The three-time champion had a wager with a fan, external that he could get up and down from a tricky spot. He landed his approach on the green, missed a putt and dug deep to settle his debt. It is however nice to know the man who has earned over $73m, did not have a single in his pocket and instead borrowed a dollar from Jason Dufner's caddie.

Earlier on I asked who was the last defending champion to lead after the first round. I'm told it was Jose Maria Olazabal in 1995. If Adam Scott is to match that feat, he needs to pick up a stroke over the closing three holes. England's Luke Donald has double bogeyed the par-three sixth to go three over, the same score as compatriot Justin Rose, who has played five.

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Bill Haas for birdie on the 18th and the outright lead in the clubhouse. Five feet away...nestling into the centre of the cup, he will sign for a 68 and the first sub-70 round of the day. Haas heads to the clubhouse as the man to be shot at on four under.

Rob Meech:, external Garcia will never have a better chance to win a major. Playing great and, most importantly, putting well. Hope he can do it.

kevinturner, external: Would love to see Sergio win great from tee to green only his putting lets him down but his putter on fire in last 4 weeks.

Another of the joint leaders is heading down the last, but Brandt Snedeker is way right off the tee to end up amongst the trees. Rory McIlroy, on one under, has reached the business area in two at the par-five 15th. He has a 40ft putt for eagle.

-3 Haas (US) after 17, Snedeker (US) 16, Scott (Aus) 14, Ousthuizen (SA) 9; -1 Fowler (US) 18, McIlroy (NI) 14, Gallacher (Sco) 11.

Selected others:E McDowell (NI) 18, Donaldson (Wal) 16, Garcia (Spa) 6, Mickelson (US) 4; +1 Westwood (Eng) 3; +3 Donald (Eng) 6, Rose (Eng) 4; +6 Lynn (Eng) 18

Par four, 465 yards

An uphill, dogleg right with two bunkers to be avoided on the left elbow of the fairway and woods on the opposite side. Two bunkers protect a sloping, double-tiered green on one the most famous finishing holes in golf.

2013 average: 4.18 Rank: 9

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