Andrea Lee and Danielle Kang fought back to win 1 up against Celine Boutier and Georgia Hall.
And US Women´s Open champion Allisen Corpuz short-putted on the last hole to nick a 1-up triumph with Nelly Korda over Leona Maguire and Anna Nordqvist.
But Pedersen’s ace in the fourballs lifted the spirit amongst her team and fans – who raved about her action.
“The most beautiful swing,” said one viewer, with others labelling her shot “crazy” and “incredible”.
A fourth posted: “Nice ace, but wow what a swing. Absolute butter.”
A fifth added: “Sweet strike that, effortless swing.”
Europe were well placed to cut their heavy deficit – but it’s still likely to be the USA’s day overall.