Round 4 - Singles Friday June 8, 2007 Match   Status   Hole Referee 17 Billy Horschel Oscar Floren 1:30pm Ed Gowan Match   Status   Hole Referee 18 Luke List Gordon Yates 1:40pm John Reis Match   Status   Hole Referee 19 Brian Harman Gareth Shaw 1:50pm Jim Cissell Match   Status   Hole Referee 20 Webb Simpson Jonas Blixt 2:00pm Grover Walker Match   Status   Hole Referee 21 Jamie Lovemark Mark Haastrup 2:10pm Jan Kikta Match   Status   Hole Referee 22 Jonathan Moore Pedro Oriol 2:20pm Tim Merry Match   Status   Hole Referee 23 Dustin Johnson Jorge Campillo 2:30pm Lee Cassady Match   Status   Hole Referee 24 Chris Kirk Rhys Davies 2:40pm Steve Levine