Marc Leishman hit a best-of-the-week 65 to grab a share of the lead on day two of the Australian PGA Championship in Queensland.
An eagle on the 15th and seven birdies led to a seven-under-par round for the Australian, who dropped shots on the 12th and 18th, to join compatriot Adam Bland on 12 under par.
Bland made seven birdies and one bogey in a second successive round of 66.
Masters champion Sergio Garcia, who is looking to cap the best year of his career with a fourth victory of 2017, slid into joint 10th after a double bogey on the ninth and bogies on the 10th and 18th saw him finish with a one-under 71, leaving him on six-under overall.
Greg Chalmers carded a 66 to lie third on 10-under, with Cameron Smith, Jordan Zunic and Rhein Gibson completing an all-Australian top six on nine-under.
England's Nathan Kimsey is the best placed British player after a 67 left him tied for 19th at the halfway stage, but Australia's former Augusta winner Adam Scott missed the cut after a second-round 74.