Mixed fortunes for Jarrod Lyle, Adam Scott off to a flyer Defending champion Adam Scott is right there, but after day one of the Australian Masters it is the twin brother of a former Australian Test cricketer who is closest to the yellow jacket. South Australian Nick Cullen, the twin brother of forgotten spinner Dan Cullen, got hold of the difficult Royal Melbourne course on Thursday afternoon with a six-under par 65 that featured six birdies, one eagle and two bogeys. The impressive display in blustery conditions and on fast greens put him three shots ahead of US Masters hero Scott, who had come in from the morning session with the clubhouse lead at four-under, tied with little-known German Maximillian Kieffer. Scott had earlier in the day surged to outright lead with a mid-round blitz of four straight birdies that propelled the world No.2 to five-under, however a late bogey put a blemish on an otherwise spotless card. The roller-coaster round that was Jarrod Lyle's emotional return to professional golf ended on an upward turn, with the popular Victorian rolling in two birdies in the last five holes to complete a satisfying one-over par round of 72 and stay inside the cut. Group partner and fellow Australian Geoff Ogilvy made sure he stayed in contention with an even par 71, while former world No.1 Vijay Singh, desperate to secure a win after a long drought, battled his way to one-over. Zimbabwe drawcard Brendon De Jonge is the other star player in the field close enough to make a strong challenge on day two having carded a three-under 68 in his opening round. 4.10pm: Jarrod Lyle's comeback round is twisting and turning like a rollercoaster, with the Victorian slipping back to two-over par after a promising start.