Northern Ireland’s search for a first win during 90 minutes under Ian Baraclough stretched to 10 matches as the USA won a low-key friendly 2-1.
Giovanni Reyna and Christian Pulisic scored for the visitors as the USA moved into a two-goal lead.
NI substitute Niall McGinn pulled a goal back with a superb strike late on.
After losing to Italy on Thursday, Baraclough’s men face Bulgaria in their second World Cup qualifier on Wednesday.
The starting team that welcomes the Bulgarians to Belfast will no doubt be very different to the one that started Sunday’s friendly after Baraclough made 10 changes to side that lost 2-0 in Parma.
Stand-in captain Kyle Lafferty missed a great early chance to open the scoring for the hosts and Shayne Lavery looked lively up front in his first senior international start, while his replacement Dion Charles twice went close during a confident 30-minute debut.