The 24-year-old Dartnell had an 11-under 133 total on the Royal Sydney Golf Club course, left unplayable in the afternoon after heavy rain flooded the greens,
Australias Mathew Goggin was second after a 70, and countryman Ewan Porter (71) was another stroke back at 8 under.
John Daly was 1 under through nine holes Friday when play was stopped. He was 5 over for the tournament after an opening 78 when he smashed a spectators camera into a tree. The American likely will miss the cut for the third consecutive week on his three-tournament tour to Australia.
We have this morning had the opportunity to speak with John Daly concerning yesterdays incident on the 9th hole, tour commissioner Ben Sellenger said. The matter has now been resolved in accordance with the regulations of the PGA Tour.
The outcome reached is a private matter between John and the PGA Tour consistent with the policy of the tour.