Happy Birthday Sevepublished at 21:09 British Summer Time 9 April 2015
The Spanish great and two-time winner at Augusta would have been 58 today.
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
Ben Dirs, Aimee Lewis, Jonathan Jurejko and Luke Reddy
The Spanish great and two-time winner at Augusta would have been 58 today.
Brooks Koepka finds drink at 11, Wales' Jamie Donaldson is experiencing a tough start to his third Masters, he's +3 through seven. Another birdie for Spieth at 10, he joins the leaders on five under par.
Iain Carter
BBC golf correspondent on Radio 5 live
Plans for a grand clubhouse and housing around the course needed to be shelved because of the economic depression of the late 1920's and 30's. Otherwise it would be hard to imagine the ultra private and exclusive establishment that materialised.
Many thanks Luke, this is Ben Dirs. I join you as Jordan Spieth has followed birdie at eight with another at nine to get to four under and one off the lead. Woods at eight and he's got a free drop away from the grandstand. I'll let you know...
There are claps for Tiger Woods but don't ask why as I have no idea. On the eighth fairway he lamps one with a fairway wood. A ping from the club. He clears the green and it's under the feet of a spectator who seems in no rush to move. A chip back down, Tiger will need another good up and down to make birdie on the par five and get back to level par.
Our man Ben Dirs will talk you through it, over to you Ben...
Brooks Koepka gives one back on the par four 10th and will now be two under. He is a debutant remember and well placed.
The men with a hot touch at the moment are undoubtedly Jordan Spieth and Ernie Els. Spieth works one into the 10th green - it's a par four - lands on the right fringe but takes a lovely little bounce and that will be another birdie chance.
Els is on 14, also a par four, lofts it... birdie chance. Around 15 feet.
Round over. The early glares out of the way. Rory McIlroy ends day one a stroke under par. His long uphill putt on 18 affords a roll in, Phil Mickelson has the same finish but will sleep tonight a shot better off that the favourite.
Ryan Moore completes the trio by almost holing out from the bunker on 18 - lips out - tap in, two over.
The Big Easy - Ernie Els - has never won here. He told us Rory McIlroy will do so one day when quizzed in midweek.
Early doors it looks more likely the South African will as he birdies 13. He nearly eagled the par five but pushed it just slightly right. That is four under.
Co-leader Charley 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."
Those geeky types like us at BBC Sport will know what the 18th green at Augusta looks like, a split level number. Rory McIlroy and Phil Mickelson don't give their approaches enough juice and will have to putt uphill onto the higher level. Birdie chances slim to none.
Tiger Woods, now can he follow up on that stunner of an approach to seven. It's a putt of 25 feet or so and it looks on line... short. He will stay one over.
No sign of Jordan Spieth slowing down as he hits the turn. The man in red-hot form has 25-20 feet on nine... he has putter's walk. He knows it's in. Four under. Rory about to play on 18.
"Brother Danny Willett shot under par in 1st round of his Masters debut. I swapped some switches. Who's living the dream?" - reads a tweet from the debutant's brother., external
Danny Willett, speaking on Sky Sports: "If someone had said I would have finished on 71 before the start of the day I would have bit their hand off. It has been fantastic, the only thing that was different is I would have thought the drive in at 5.45am would have been easy but there were huge crowds. The crowds have been awesome, it gives you goosebumps."
Oh yes... Tiger rolls back the years. Is it 1997 again? Could this moment of magic ignite this round?
Woods is behind a tree, left of the fairway on seven with barely a shot but he digs down on one and the ball basically disappears. No one knows what is happening other than him. Time for the moment of truth as it drops from on high... cure roars and whoops.
It finds the heart of the green. Magnificent.
One of his playing partners Jimmy Walker is inspired and follows by drilling one to within four feet.
I wonder what Rory McIlroy would have taken at sunrise?
Red numbers undoubtedly, but one under? He'd probably have liked more. Finds the middle of the fairway on 18. Mickelson is also on the nice grass.
Splash. Who? Shane Lowry.
The Irishman is in trouble on 11. Pulled it on the par four as he went big for the green.
Paul Casey ends with bogey and a round of 69 - three under. Jordan Spieth sends an eagle putt past and converts for birdie and three under overall through eight. What now for Woods? Yes. Solid up and down and he makes par on six.
Sergio Garcia is following Tiger up the sixth and will take nine Iron... starts it right into the par three green. A monster... four feet away from the pin but wait, trickle, trickle, it rolls back down a slope and leaves a chip.
Margins. Small but critical at Augusta.
Three-time major winner Padraig Harrington has been busy practicing, tweeting and scribbling this week.
"Busiest yardage book of the year. Still adding notes every time I play Augusta. No course is as complicated," tweeted the 43-year-old., external
Harrington won the Honda Classic last month, his first PGA Tour win in nearly seven years.
He pushes a putt past on 10 though and goes back to level par.
Tiger shrugs in dismay with his ball in the air on the par three sixth. It's a first show of frustration from the 14-time major winner.
Where will it drop? Where will it drop? We wait eagerly. Right of the green it's a reckless one but if he chips well he can haul a par here.
Remember, the rumours were Tiger had the chipping yips...
Jordan Spieth, a par five, a chance to pick up a shot. Here he is in the middle of the fairway and wallop.
It's green, it's probably 20 feet from the hole, it's a chance to move on from that mark of two under. Stand by for a Tiger mishap...