It is the FA Cup semi-finals this weekend. And for the first time in 100 years three non-top flight teams have got to this stage. Portsmouth are the only Premier League side left in it. They are playing West Brom.
Barnsley are up against Cardiff City. With both sides in the Championship it means at least one second tier side will definitely be in this year's final on 17 May.
The bookies are finding it hard to choose between the two lower clubs, who play each other at Wembley on Sunday 6 April.
Barnsley have beaten Liverpool and Chelsea to get to this stage but they are hovering just above the relegation zone in the league.
And Cardiff have done some giant killing of their own. They beat Middlesbrough in the quarter-finals.
Newsbeat has been chatting to both sides to find out more about what the teams are like.
Go behind the scenes with Barnsley and Cardiff
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