Erik ten Hag rued his side's missed chances as Man united suffered a 3-0 defeat to rivals Liverpool in Saturday's pre-season friendly in the United States.
Liverpool made it three wins from three in their tour of the United States as they eased to victory over their rivals in South Carolina.
77,559 were in attendance at the Williams-Brice Stadium as Fabio Carvalho capitalised on some poor defending to give the Reds a 10th minute lead.
Curtis Jones made it 2-0 before half-time with Konstantinos Tsimikas adding a third after the break.