Phil Mickelson became the first player to book his place in the last 16 of the World Golf Championships - Accenture Match Play tournament, but he was made to sweat by fellow countryman Zach Johnson.
Four up with five to play, Mickelson seemed to be cruising but missed a clutch putt on the 16th and then allowed Johnson to get another hole back on the 17th. It came down to the last hole and Mickelson reached the green with two excellent shots that Johnson could not match and the left-hander’s two putts saw the match out.
Lee Westwood and Stuart Cink are involved in a very tight match. Cink, the runner up to Tiger Woods in last year’s tournament has won the last two holes to go from 1 down after 13 to 1 up after 15.
Camilo Villegas continued his early round form and won 5 and 4 in his match up with Miguel Angel Jiménez.
Paul Casey cemented his lead over Matthew Goggin and is leading by four after 12 holes. Casey's half of the draw, the Gary Player and Bobby Jones brackets, has had some big name casualties go home after the first round. Players such as KJ Choi, Henrik Stenson, Kenny Perry, Sergio Garcia, Robert Karlsson and Padraig Harrington are already out of the tournament opening up the possibilities for some of the lower seeded players.
Oliver Wilson and Anthony Kim, who both had excellent performances in The Ryder Cup, are involved in a tight match up. Kim holed a 30 foot putt on the 13th green to get to within one shot of the Englishman.
Jim Furyk has taken an early stranglehold in his clash with Martin Kaymer and is now 3 up after eight holes.
Peter Hanson is 2 up on Stephen Ames after 12 holes, while Rory McIlroy has struggled over the first three holes but has steadied himself to be all square after seven holes against Hunter Mahan.
Ross Fisher is four holes to the good against Pat Perez, in what is beginning to look like a very good day for Members of The European Tour.
Charl Schwartzel is one up on Ian Poulter after six holes and Sean O`Hair is all square with Boo Weekly early in their round after five holes.
Woods has started off well in his tie with Tim Clark but the South African holed a 70 foot putt over two levels, with just enough pace to reach the brow of the final ridge and slope down into the cup on the fifth hole, leaving them all square at the turn.
Ernie Els is two up on Steve Stricker after ten holes and Vijay Singh is one up on Luke Donald after 11 holes. Justin Leonard and Davis Love III are all square after 17 holes and Shingo Katayama is one up over Geoff Ogilvy after 14 holes.