Rory McIlroy chasing career Grand Slam at Augusta
McIlroy opens with one-under-par 71
Jordan Spieth leads by three on -8
England's Justin Rose tied second on -5
Defending champion Bubba Watson finishes -1
Sergio Garcia -4; Paul Casey -3; Tiger Woods +1
Image source, AFPGarcia with his second at 10 and he's hooked it into the pine straw. Spieth with a feather for birdie at 13... in it goes, we have a new outright leader...
Image source, EPACharley Hoffman, speaking on Sky Sports: "It was nice to get off early, it was not too warm and perfect conditions for me. I was able to take advantage. It was a nice finish and I am happy to be done."
Image source, EPASpieth with a doozy of a third at the 13th, he should make birdie from there for the outright lead. Woods at 11 and he's mangled one down the middle. There might still be a few things wrong with Woods's game, but a bad back wouldn't appear to be one of them.
Image source, Ken BrownAfter your Ken Brown fix? Here he is relaxing between commentary duties. That is a bottle of Masters water he's holding but - in between sips - he has, as always, got his thoughts on the course: "The early conditions were absolutely perfect. First out was Charley Hoffman and so far he has the lowest score.
"There is not a breath of wind. There was rain yesterday so the greens are softer. Conditions could not be better. That would favour players with less experience as the conditions are very manageable."
Image source, ReutersRory McIlroy has been speaking to BBC Sport. On being four shots of the lead, the world number one said: "It really doesn't matter right now. I'm trying to be as patient as possible.
"It was a solid start. Anything under par today is a decent score. I just chipped away at it and got a couple of birdies on the back nine.
"I was nervous and excited teeing off. I have been wanting to get going for a while."
Image source, AFPSpieth looks like he's laying up at 13 and indeed he does. Woods with a four-footer for par at 10, rattles it in to stay +1. Ernie takes aim at the 400-yard 17th and he's tugged that left to leave himself a spot of scrambling.
Image source, Getty ImagesNot a bad three weeks for Spieth - victory at the Valspar, second at the Texas Open on the last weekend in March and the same position a week later at the Houston Open.
Image source, Getty ImagesKuchar chips in for eagle at 13, moves to -1. Ryan Palmer remains three off the lead after a par at 14. Here's Ernie on the 16th, putting from 15 feet... too much borrow, stays -6 and tied for the lead.
Image source, Getty ImagesWoods is slap-bang middle of the 10th, ball slightly above his feet, and he's leaked it into the bunker out right. Spieth with driver at 13 and he's sprayed it right... great break, ricochet back onto the fairway. Garcia drains a birdie putt at nine, he's out in two-under 34. Jason Day joins him with a birdie of his own...
Iain Carter
BBC golf correspondent on Radio 5 live
The club struggled to pay course designer Dr Alister McKenzie who died shortly before the first Masters (or the Augusta National Invitation Tournament as it was called) in 1934.
Image source, Getty ImagesEls on tee at the par-three 16th, right at the flag, another birdie opportunity uphill. Spieth on 12, to tie for the lead... walks straight after it, thinks he's missed it but the ball decides to drop in.
Image source, ReutersPadraig Harrington has made birdie at 13 to get back in the red, signs that the Irishman is rediscovering something like his vintage form of yesteryear. Woods with three wood off the tee at 10, draws it down the slope, nicely done.
Here's Ernie putting for eagle at 15, for the lead... squeezes it in with that short blade he's using again, the four-time major winner looks it very good nick indeed. Great par putt from Woods at nine, misses by a couple of inches, he's out in 37.
Wayne Staats of the Augusta Chronicle writes:, external "As Niall Horan got whisked away on a golf cart from the Par-3 Course, a teenage girl sobbed. 'I love him so much,' the 13-year-old cried to her father. 'I'm never coming here again!'"
Image source, Augusta ChronicleIt seems Rory's One Direction hook up went down a storm at Augusta.
"Sometimes it wasn't clear who was more popular with autograph-seekers, the top-ranked golfer or the music star," adds Staats.
Image source, ReutersJason Day, one of the bookie's favourites, very nearly makes eagle from 100-odd feet on nine. The Aussie is one under. Woods playing from the pine straw and he's clipped it onto the ninth green, well enough. Spieth for birdie at 11, down the hill but he doesn't hit it.
Image source, AFPErnie Els has got a shortish putt at 15 to go six under and into the outright lead. What an approach that was. Woods's frustration beginning to get the better of him - he sprays another wood at nine before swinging his club violently in the other direction. Hit it fat, about 100 yards, like watching Da Vinci doodling with crayons.
Image source, Getty ImagesNorthern Ireland's Graeme McDowell misses the green with his tee shot at 12, he's level thus far. A lot of people backing Rickie Fowler this week but he's got off to an iffy start, he's +1 through seven. England's Luke Donald out in 38, it's going to be tough winning his first major from there.
BBC Golf correspondent Iain Carter has all the bases covered at Augusta, you can just see that Georgian sunshine peeping through.
Image source, Iain CarterKoepka has unravelled at 11, he makes a triple to drop back to +1. Spieth with a peach into the guts of the 11th green, he's got another very makeable birdie putt for the outright lead. Woods sprays one off the tee at nine, club falls out the back of the swing, he's got some patching up to do. Again...
Image source, Getty ImagesWoods's third at eight and it's decent, leaving himself a six-footer for birdie. Sergio Garcia has made birdie at seven to get into the red, Woods makes that putt to get back to level par.