Masters day one: Honorary starters Jack Nicklaus (left) and Arnold Palmer shake hands on the first tee before firing the opening shots of the 2010 Masters at Augusta National
Luke Donald, one of a number of British contenders, lines up his putt on the first green with Geoff Ogilvy of Australia looking on
Welshman Ian Woosnam, the 1991 Masters champion, is among the early starters in sunny conditions at Augusta National
Germany's Bernhard Langer leads the European challenge early on the opening day with three birdies on the front nine before dropping a shot at the 10th
American Heath Slocum chips onto the second green from one of Augusta's more straightforward bunkers as crowds gather to watch the morning exchanges
England's Paul Casey, with four top-10 finishes to his name this year, makes a solid start to his opening round
World number four Lee Westwood, seeking to become the first Englishman to win a major since Nick Faldo's Augusta triumph in 1996, fires his tee shot on the second hole
Two-time runner-up Ernie Els, who won back-to-back tournaments in the buildup to the Masters, splashes out of a bunker on his way to a par at the second hole
Defending champion Angel Cabrera of Argentina tosses his ball to his caddy after a birdie at the third hole moves him among the early leaders
Unsurprisingly, all eyes at Augusta are on Tiger Woods (left), who is welcomed back to the playing arena by David Duval (right).
A packed gallery looks on as Phil Mickelson plays out of the bunker at the ninth hole.
Veteran Tom Watson (left) congratulates Steve Marino after his eagle at the second hole.
In the run-up all the talk was about the return of Woods, and the crowds turn out in force to watch him in action.
The Augusta crowd get their chance to pass judgement on Mike Weir's swing at the 17th hole.
England's Ian Poulter finds himself struggling with Augusta's flawless sand as he comes a cropper at the fifth hole.
The spectators seem to be dressed for the warmth but the rain kicks in midway through the first round at Augusta.
South Africa's Charl Schwartzel takes cover from the elements at the 10th hole, but the Augusta rain is not heavy enough to stop play.
Despite being the centre of so much attention, Woods looks perfectly composed as he performs an impromptu juggle as he walks off the eighth green.
Couples, the champion back in 1992, continues to shine throughout his round with a superb array of shots and takes the outright lead
Woods hits eagles at the eighth and 15th holes and walks off at eighteen only two shots off the lead