
Ko fired an even par 71 which included three bogeys and three birdies.
She was six shots behind the leader Hinako Shibuno of Japan.
The Open is the last major tournament of the year.
Ko teed off in round two a little before 8pm yesterday (NZT), and as the Otago Daily Times went to press she had started well, firing birdies on holes 2, 3 and 4, to move up to sixth-equal, within three shots of Shibuno (who was yet to tee off). — RNZ/staff reporter