Rory McIlroy is one shot off the lead at the midway point of the Australian Open.

A second round of 69 leaves the world number one in a four-way tie for second on 4-under.

Greg Chalmers is the halfway leader on 5-under par.

Golf leaderboard

1 G.Chalmers -5 
T2 A.Crawford -4 
T2 R.McIlroy -4 
T2 C.Shindler -4 
T2 T.Sinnott -4