This week, BBC Football expert Chris Sutton is taking on Justin and Arni from indie band The Vaccines to predict the fourth round of the FA Cup.
On Friday, it's an all-Premier League tie between Chelsea and Aston Villa (19:45 GMT).
Sutton's prediction: 2-1
The cups offer a way for Chelsea to save their season, and they are already in the final of the Carabao Cup after beating Middlesbrough.
Mauricio Pochettino's side have been getting better, it's just not the momentous rise we expected.
Chelsea cannot afford not to go full pelt at this game but Aston Villa might be thinking about the top four, and Tuesday's game with Newcastle.