Honestly, I was low-key expecting Man UTD to turn the game around like they are used to doing but it's safe to say that Grimsby came all out for them I have to say that this has been the longest penalty shootout that I've witnessed in a long while and even though Man UTD tried all they could do to ensure they come out being the winners via penalties, today was just not their day. Wow, football can be really unpredictable.
In the end, Man United lost despite trying to equalize the score to 2-2, but they were unlucky in the long penalty shootout. 
Some people questioned what happened to the Man United team causing them to lose to the underdog team.
It is possible that with this defeat more fans will be fed up with the result even though it is a small tournament, the defeat of a big team still causes ridicule.
This is the biggest question here, after Manchester United lost, Manchester United fans have raised more questions about why such a result happened. Manchester United fans cannot accept it, although this is a small cup, they are still regretting the loss of a big team. I never imagined that there would be such a gap in the main game, because Manchester United fans were definitely inattentive to this game.
And in the end, up to 12 penalties had to be shot, a tough competition between the two teams, I am disappointed to see this competition between the goalkeepers of the two teams. And in the end, the defeat of the big team.