The Americans owned a 4-2 advantage over the Great Britain & Ireland team in the world's most important team event in women's amateur golf. The United States is seeking its sixth straight victory in the competition.
Blumenherst and Lewis finished the day with a 3 & 1 victory over Florentyna Parker and Elizabeth Bennett in the final fourball match, played over the historic Old Course at St. Andrews.
In the foursomes matches, Blumenherst teamed with Tiffany Joh for a 1-up win over Breanne Loucks and Parker. Lewis and Alison Walshe paired up for a 3 & 1 victory over Bennett and Jodi Ewart.
The event will close Saturday with a series of singles matches.