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Wade Ormsby of Australia birdied two of his closing three holes to share the clubhouse lead with Arnond Vongvanij of Thailand in the second round of the rain-affected Ballantine's Championship on Friday.
Arnond also birdied the 18th, as the pair strive for their first European Tour title at Blackstone Resort.
Ormsby carded a 5-under-par 67 to be tied on 7-under with Arnond, who signed for a 69.
Three players - England's James Morrison (66), Sweden's Alexander Noren (67) and South African Jbe Kruger (67) - shared third place at 6 under.
After the first day was delayed by fog and rain, play stopped on Friday for more than an hour because of an electrical storm, leaving 77 players to complete the second round early Saturday.
