Sports Correspondent Simon O'Rourke was at Wembley with Sunderland fans for ITV News Tyne Tees.
Thousands of fans have travelled to Wembley. The Black Cats are the underdogs - but this is Sunderland, and anything could happen.
Cup Final fever has been sweeping across Sunderland as fans and the club head to Wembley hoping to achieve a historic victory once more.
It's been an historic day for Sunderland.
And though the fans won't be coming home with the result they hoped for, thousands of them filled the stands, cheering on Poyet's men.
Gus Poyet praised players and fans following their 3-1 League Cup final defeat to Manchester City.
The Black Cats manager told Sky Sports: 'I am proud of the players and the fans and I promise we gave them the best shot we could have. It's difficult to take. I hate losing but I am proud of the players."
Asked about goals from City's Yaya Toure and Samir Nazri, he said: "That is the best part of what we are all about. Manchester City had to score two wonder goals [to win.]"
It all started well for Sunderland.
Fabio Borini put the Black Cats 1 – 0 up after just nine minutes with a goal set up by Adam Johnson.
Manager Gus Poyet celebrated from the touchline, arms outstretched.
But, in the second half, two Manchester City goals in two minutes ended the dreams of bringing a major trophy back to Wearside for the first time in 40 years.
Yaya Toure scored at 54 minutes with a shot 30 yards from the goal into the top corner.
Two minutes later, Samir Nazri put Pellegrini’s men ahead.
And in the 89th minute, Jesus Navas sealed the win for the favourites.
Final score: Sunderland 1 – 3 Manchester City.
Navas scores for City, putting them 3 - 1 up in the League Cup final against Sunderland.
Manchester City have taken the lead in the League Cup final with a goal from Nazri.
Sunderland 1 - 2 Manchester City
Manchester City have equalised with a goal from Yaya Toure in the League Cup final.
Sunderland 1 - 1 Manchester City.
Sunderland have gone 1 - 0 up after nine minutes in the League Cup final against Manchester City at Wembley.
Fabio Borini put the Black Cats ahead.
ITV sport has live minute-by-minute updates.
One family of Sunderland fans are already having a lucky day.
Only half the family had tickets when they got down to London yesterday.
But a Canadian fan had two spare tickets, and wanted to give them away FREE to a good home.