Golf: Vikki slumps down under
The 29-year-old was lying 16 shots behind the clubhouse leader, Korean Jiyai Shin, at the Commonwealth Golf Club.
Laing, who had two 7s on her card - one of them a triple-bogey at the 17th - wasn't the only Scot in the field to struggle.
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Hide AdKrystle Caithness opened with an 84, the main damage for the Fifer being caused by a triple-bogey 7 at the last, while Kylie Walker was nine-over with two holes to play after running up three double-bogeys.
Carly Booth signed for a 77 after three closing bogeys, but qualifier Clare Queen was having a much better day.
One of the later starters, she was two-under with three holes to play, the highlight of her round being an eagle at the 13th, her fourth hole.
Shin was holding a one-shot lead over Ireland's Rebecca Coakley.