Ninety other teams have fallen by the way side, and our two finalists have disposed of eight of those sides between them on the way to the final.
Southampton are yet to concede a goal all tournament, knocking out fellow Premier League sides Crystal Palace, Sunderland, Arsenal and Liverpool in style.
As for Manchester United, they saw off Northampton Town, rivals and reigning Cup champions Manchester City, West Ham United and Hull City.
Road to Wembley: How Manchester United and Southampton made it to the EFL Cup Final
If United can add Southampton to their list of conquests, they will sit alongside Aston Villa and Chelsea on the Roll of Honour with five titles, and manager Jose Mourinho will claim the crown for the fourth time.
The Portuguese boss won his previous three with Chelsea and can become the first manager to win the trophy with two different clubs.
One of the greats: Jose Mourinho can join the legends with EFL Cup success
History favours the Red Devils too – they hold a dominant head-to-head lead over their opponents, although it's been more even over recent years.
Since a win in 2014 for United, the pair have alternated victories. With Manchester United winning back in August, the pattern now favours the Saints.
Over the years: Manchester United v Southampton – memorable moments
You can watch the action unfold live on Sky Sports on Sunday. Kick-off is 4:30pm, and you can also follow the game via the @EFLCup