Rocco Mediate has carded an eight-under 64 to lead the field after the first round of the Michigan Buick Open, but Australian Steve Elkington remains in contention just two-strokes further back. Mediate, though, started the tournament with an impressive round which saw him open with four birdies before following that up with a further four on the back nine to be one-stroke ahead of Brett Quigley, Woody Austin and Brian Bateman who all carded 65s. Just one-stroke further back is Elkington (66) who shares fifth place with Jim Furyk, Cameron Beckman and Scott Verplank. After hitting just one birdie to open, Elkington produced an impressive back nine where he carded four consecutive birdies between the 11th and 13th holes before finishing with another one on 18 to be just two-strokes off the pace. However, in a good day for the Australian contingent, Elkington finds himself just one-stroke ahead of Mark Hensby (67) while Gavin Coles is also among the leaders having carded 68. Robert Allenby (69), Mathew Goggin (69) and Stephen Leaney (69) all enjoyed quality rounds as well but Michael Sim, who was so impressive in the first two rounds of the Travelers Championship last week, struggled to recreate that form as he finished on even-par. Results from round one of the Buick Open, Michigan : -8: Rocco Mediate 64 -7: Brett Quigley 65, Woody Austin 65, Brian Bateman 65 -6: Jim Furyk 66, Cameron Beckman 66, Steve Elkington (Australia) 66, Scott Verplank 66 -5: Mark Hensby (Australia) 67, Craig Kanada 67, Kyle Reifers 67, Jeff Quinney 67 -4: Fredrik Jacobson 68, Corey Pavin 68, Marco Dawson 68, Ryuji Imada 68, Charlie Wi 68, Alex Cejka 68, Lucas Glover 68, Robert Garrigus 68, Gavin Coles (Australia) 68 also: -3: Robert Allenby (Australia) 69, Mathew Goggin (Australia) 69, Stephen Leaney (Australia) 69 -2: Jarrod Lyle (Australia) 70 -1: John Senden (Australia) 71 +E: Rod Pampling (Australia) 72, Paul Sheehan (Australia) 72, Andrew Buckle (Australia) 72, Michael Sim (Australia) 72 +1: Steve Allan (Australia) 73, Stuart Deane (Australia) 73 +2: Paul Gow (Australia) 74, Peter Lonard (Australia) 74 +6: Craig Perks (New Zealand) 78 +7: Steven Bowditch (Australia) 79