Northern Ireland's Graeme McDowell surged into the lead with a course record-equalling 62 at St Andrews on day one of the Dunhill Links event.
G McDowell (NIr) SA-7
R Goosen (SA) KB, P Lonard (Aus) KB, D Howell (Eng) KB, J Kingston (SA) CA-6
R Sterne (SA) CA, L Donald (Eng) KB
SA - St Andrews; KB - Kingsbarns; CA - Carnoustie
The 25-year-old led by three from a quartet including US Open champion Retief Goosen and David Howell.
In the team event, McDowell and Noreen McManus shared the lead with SA pro Richard Sterne and Kenny Dalglish.
The field comprises pros and amateurs playing in pairs for two competitions - a regular Tour event and a team prize.
After three rounds the field will be cut to the top 60 pros and top 20 teams.
The event takes place at St Andrews, Carnoustie and Kingsbarns in Scotland with the last round back at St Andrews.
McDowell's 10 birdies saw him equal the course record held by England's Brian Davis and young amateur
Kevin McAlpine, who achieved it in the British Amateur
Championship in June.
TEAM EVENT LEADERBOARD
N McManus/McDowell, K Dalglish/ Sterne-10
-8 K Costner/Harrington, M Douglas/Levet, H Grant/Casey
-7 J Kidd/Montgomerie
-6 I Botham/Woosnam, I Wright/Brand Jnr
-5 D Quaid/Immelman, D Hopper/Poulter
Amateur names first
Former US Ryder Cup captain Curtis Strange also shot a 62 but the
American's score came before the course was lengthened.
English Ryder Cup star Howell fired 65 at Kingsbarns, as did Goosen and Australian Peter Lonard, while South Africa's James Kingston shot his 65 at Carnoustie.
England's Luke Donald signed for a 66 at Kingsbarns, while on the same course world number one Vijay Singh, South Africa's Ernie Els, Scot Colin Montgomerie, French Ryder Cup star Thomas Levet and Australian Adam Scott all carded 68s.
Fijian Singh said: "It was hard to get close and attack here but it is three
different courses and I won't look at the others until I have played all three.
"I am happy with my score but the guy who shot a 10-under-par must be out of
this world or out of his mind. That is fantastic but I am happy with my score."
Defending champion Lee Westwood and Ireland's Padraig Harrington both compiled one-under 71s at Kingsbarns.
In the team event, Noreen McManus, wife of Irish tycoon JP McManus, carded a combined 61 at St Andrews to sit at 11 under alongside Liverpool football legend Dalglish, who also fired a 61 at Carnoustie with South African Sterne.
Hollywood star Samuel L Jackson, playing with Howell, was one shot back after a joint 62 at Kingsbarns.
The winning team from 2003, Sam Torrance and his teenage son Daniel, were in a group on nine under after a combined 63 at Kingsbarns.
Former England rugby star Tory Underwood, playing with Simon Yates, was eight under after a 64 at Carnoustie, the same as All Black legend Zinzan Brooke and former Arsenal star Lee Dixon.
Hollywood star Kevin Costner, paired with Harrington, was also eight under with a 64 at Kingsbarns alongside actor Michael Douglas and partner Levet and actor Hugh Grant and English pro Paul Casey.
Supermodel Jodie Kidd and partner Montgomerie were on seven under.
"We had some laughs. The golf was up and down but it was great fun," said Kidd.
Montgomerie joked: "We're only four behind the leaders but we didn't want to embarrass anyone."
He added: "But it all evens itself out over three rounds. I enjoyed myself but I have got
to get going tomorrow and see where that leaves me."