Brett Rumford carded a second-round 65 to take a share of the lead in his hometown event at the Perth International.
Rumford, who was born in the Western Australia city, sits alongside Peter Uihlein at 11-under going into the weekend as he chases a sixth European Tour victory.
It is a welcome return to the head of a leaderboard for Rumford, who spent large parts of the 2015 season off the course owing to health issues.
"It was one of those days where you had to keep grinding," the 38-year-old told the European Tour's official website.
"Concentration had to be at a premium and that's the kind of pressure this golf course puts on you.
"My concentration waned a little bit coming home but I made some nice up-and-downs and made some nice putts from long range as well, so all in all I was really happy."
Former Open champion Louis Oosthuizen sits in third after a sublime 64 left him a shot adrift of the leading pair at 10-under, while Australians Rhein Gibson and Jason Scrivener are at 9- and 8-under respectively.
Alexander Levy is the leading European in the field, sitting sixth on 7-under.
For his part, co-leader Uihlein, who added a 68 to his opening-day 65, wants to make the most of his position.
"It's always good finishing like that," the American two-time European Tour winner said.
"I'm pleased with my two days' work and hopefully I can keep it going Saturday and Sunday."
The Press Association contributed to this report.