China's Dou Zecheng beat fellow 16-year-old Sam Horsfield of England 1 up Thursday in the U.S. Amateur Public Links to advance to the quarterfinals.
Dou took the lead with a par on the par-3 16th at Laurel Hill and matched Horsfield with a par on the par-4 and a birdie on the par-5 18th to close out the match.
Dou, a 3-and-2 second-round winner over Sam Saunders of Albuquerque, N.M., in the morning, will face Jordan Niebrugge of Mequon, Wis. Niebrugge beat Canada's Justin Shin 5 and 3 in the third round.
The tournament is limited to players who don't hold privileges at any course that doesn't extend playing privileges to the general public. The 36-hole championship match is Saturday.