The Dunhill Links Championship brings celebrities from the world of sport and entertainment to play alongside the world's top golfers - such as cricket legend Sir Ian Botham, here with former Open champion Ernie Els
The tournament takes place on three Scottish courses - St Andrews and Kingsbarns in Fife, and Carnoustie in Angus. British actor Hugh Grant felt an extra sweater was in order in practice at Kingsbarns
Gerry McIlroy (right), who celebrates his 50th birthday next week, will partner his son - Northern Ireland prodigy Rory - and gets some pre-tournament tips from Dutch football legend Johan Cruyff
Although Star Wars actor Samuel L Jackson, a Dunhill Links regular, is not playing this year, double Open champion Padraig Harrington brushes up on his own Jedi skills, using "The Force" to keep a golf ball in the air
Dominican Republic golfer Manuel de los Santos, who lost a leg in a car crash, found the water at the Old Course on Wednesday but is an early starter at Kingsbarns on Thursday
Former Boyzone singer Ronan Keating and US actor Aidan Quinn are both sporting the bearded look these days - and shade their eyes from the sun at Kingsbarns early on Thursday
Shane Warne prefigures Friday's ICC Champions Trophy semi-final between England and Australia when the legendary Aussie spinner lines up in a foursome with Sir Ian Botham at St Andrews, playing with Peter O'Malley and Paul Broadhurst
Ex-Netherlands star Ruud Gullit, the man who famously talked about "sexy football", is in action at Carnoustie in a foursome with fellow ex-footballer Jamie Redknapp and golfers Luke Donald and Joost Luiten
European Ryder Cup stalwart Lee Westwood (right) has no chance of slacking off at Carnoustie - his playing partner is his manager, Andrew "Chubby" Chandler
A former Baywatch actor lines up a putt at Carnoustie - but not David Hasselhoff or Pamela Anderson. It's former world surfing champion and occasional actor Kelly Slater
Former England captain Michael Vaughan, seen here at St Andrews, has plenty of time to work on his golf handicap after retiring from cricket earlier this year
One of the last pairings out at Carnoustie is former British tennis number one Tim Henman, who plays off a handicap of one and partners European Ryder Cup captain Colin Montgomerie
As the day draws to a close, Alastair Forsyth and football legend Sir Bobby Charlton - the last pair out on the Old Course at St Andrews - pose on the famous Swilken Bridge
But at the end of day one it is Denmark's Thomas Bjorn (right) who stands on top of the professionals' leaderboard, having fired a 64 in his round at Kingsbarns
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