"Yesterday the wind was hard, but it was really consistent," Noh said. "It was easier to control the distance because it was consistent. Today the wind was swirling and then came up a little bit and died a little bit. It wasn't consistent and made things tougher on the second shot."
Noh had a 10-under 203 total on Ohio State's Scarlet Course.
Jim Herman and South Africa's Tyrone Van Aswegen were tied for second. Herman had a 67, and Van Aswegen shot 68. Argentina's Miguel Angel Carballo was 6 under after a 69.
The bulk of the field is made up of players in the top 75 on the Web.com Tour money list and Nos. 126-200 in the PGA Tour's FedEx Cup standings. The top 25 on the Web.com regular-season money list are assured PGA Tour cards for the 2013-14 season, while the other players are fighting for 25 additional cards through earnings in the finals.
The 22-year-old Noh was 160th in the FedEx Cup standings. He opened the series with a seventh-place tie in Fort Wayne, Ind., and missed the cut last week in Davidson, N.C. Noh has two victories on the Asian Tour—the 2008 China Classic at age 16 and the 2010 Malaysian Open.
"Same plan for tomorrow," Noh said.
Herman was 139th in the FedEx Cup standings, and Van Aswegen was 49th on the Web.
Herman had the first-round lead after a 64, then shot 75 in the second. He grew up in Cincinnati and helped his high school team win a state championship on the Scarlet Course.
"Just play golf and let the results take care of itself," Herman said. "I know if I have a good week here, it'll take care of things. Drive it in the fairway and that's when you can be aggressive and try to make some birdies. If you're in the trees all day you're not going to be able to go at any pins."
The series will end Sept. 26-29 with the Web.com Tour Championship in Ponte Vedra Beach, Fla. The money leader in the four events will be fully exempt and earn a spot in The Players Championship.