Cole Hammer and Ricky Castillo each recorded two wins on Saturday to lift the US to a 7-5 lead over Great Britain and Ireland heading into Sunday's foursomes at the 2021 Walker Cup.
Castillo set a strong pace for the hosts in the foursomes morning session at Seminole Golf Club in Florida, teaming with Mac Meissner to record a 2-up victory over GB&I's Jack Dyer and Matty Lamb.
Hammer and David Thompson then toppled Alex Fitzpatrick and Barclay Brown 1-up for the US squad's second win.
Not everything went the hosts way early though, with the GB&I teams of Mark Power/John Murphy and Angus Flanagan/Jake Bolton evening the morning scores with 1-up victories.
However, dominant singles wins in the afternoon session from Hammer and Castillo ultimately turned the tide back in favour of the hosts.
Hammer eclipsed John Murphy 3&1, while Castillo cruised to a 5&3 win against Ben Schmidt.
Pierceson Coody, William Mouw and Austin Eckroat rounded out the US winners, while Mark Power, Matty Lamb and Barclay Brown recorded singles wins for GB&I.
