Newcastle manager Alan Pardew says his team's 2-1 win over Premier League leaders Chelsea was a victory over "the best team in Europe".
Papiss Cisse scored twice for the hosts and, although Didier Drogba pulled one back, the Magpies inflicted the league leaders' first defeat of the season.
"It is the best day of the year because of the opposition," said Pardew.
"That was about character and discipline against probably the best team in Europe at the moment."
He added: "It's the resilience of the individuals and as a team that we have got ourselves a famous win."
Newcastle had Steven Taylor sent off after 81 minutes and also had to survive six minutes of added time before securing the three points.
"I saw them against Spurs and they gave them a bit of a hard time," added Pardew in reference to Chelsea beating Tottenham 3-0 on Wednesday.
"We wouldn't let that happen and we got our reward.
"If someone had told me we were going to beat Chelsea and have six minutes of added time, they would have Drogba, Diego Costa and all of them on the pitch and we would be down to 10 men, I wouldn't have believed them."
Pardew also had to replace goalkeeper Rob Elliot with Jak Alnwick at half-time, with the 21-year-old coming on to make his competitive debut.
"Jak was poised and we had got him mentally ready but you have to pay credit to the guy because he was so cool," said Pardew.