Joe Ironside scored the winner as League One Cambridge secured a huge FA Cup upset by beating Premier League Newcastle at St James' Park.
The striker, who grew up idolising Newcastle legend Alan Shearer, turned in the winner from close range 11 minutes into the second half.
It proved a miserable Newcastle debut for Kieran Trippier, the defender signed from Atletico Madrid on Friday.
Goalkeeper Dimitar Mitov was superb as Cambridge saw out the win.
Mitov made a stunning stoppage-time save from Joelinton in as 5,000 visiting fans celebrated.
Those visiting supporters, high up behind the goal, were rewarded for their long journey north with a battling performance.