Grace Kim had a hole-in-one and combined with Auston Kim for eight birdies for a nine-under 61 and that earns them a five-way share of the lead in the Dow Championship.
The best score of the second round actually belonged to the Danish pair Nicole Broch Estrup and Nanna Koertz Madsen, who birdied their last two holes for a 10-under-par 60.
Ally Ewing and Jennifer Kupcho of the United States had a 64, the same…