The Indian, playing with a lot of fire and purpose, got the better of the Malaysian legend 11-8, 11-6, 12-10 in a match played on Monday night.
Joshna was in great touch in the first two games before Nicol bounced back to put up a fight in third. Points had gone neck and neck before the Indian outdid her opponent to earn a passage into the last 16.
Joshna now plays sixth seed Sarah-Jane Perry of England.
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