ARDMORE, Pa. — Amari Avery won two more matches Saturday to help the United States take an 8 1/2-3 1/2 lead over Great Britain and Ireland in the Curtis Cup, with eight singles matches set for Sunday at Merion Golf Club.

Avery, the 18-year-old Riverside, California, player coming off her freshman season at Southern California, went 4-0 in the four-ball and foursomes matches.

Avery teamed with Megha Ganne to beat Hannah Darling and Annabell Fuller 2 and 1 in the morning four-ball session and joined Rachel Kuehn in the afternoon foursomes for a 2-up win over Amelia Williamson and Emily Price.

The United States leads the amateur series 30-8-3, winning 12 1/2-7 1/2 last year at Conwy Golf Club in Wales.

Emilia Migliaccio and Latanna Stone also won for the United States in the morning, beating Charlotte Heath and Louise Duncan 1 up.

Caley McGinty and Lauren Walsh earned 1 1/2 points for GB&I, beating Kuehn and Jensen Castle 5 and 4 in four-ball and halving with Rachel Heck and Rose Zhang in foursomes.

Darling and Fuller also won for GB&I, topping Castle and Stone 2 and 1 in foursomes.