Southern California's Annie Park won two matches Friday in the Curtis Cup to help the United States take a 5-1 lead over Britain and Ireland at St. Louis Country Club.
The 19-year-old Park, from Levittown, New York, teamed with Mississippi State's Ally McDonald to beat Bronte Law and Charlotte Thomas 4 and 3 in the morning four-ball matches, then joined UCLA's Erynne Lee to top Eilidh Briggs and Gabriella Cowley 3 and 1 the afternoon foursomes.
The United States is trying to regain the cup after falling 10½-9½ in 2012 at Nairn in Scotland. The loss was the Americans' first since 1996. The Americans lead the series 27-7-3.
On Saturday, there will again be three morning foursomes matches and three afternoon four-ball matches. On Sunday, the biennial competition will close with eight singles.