The Mac Allister brothers were happy for father Carlos after Liverpool's 2-0 Europa League win against Union SG.
Liverpool ace Alexis Mac Allister faced brother Kevin on the night at Anfield.
Alexis said: "[It was] really nice. Of course for the family [it is] something very emotional. I have played against my older brother before and never against Kevin so it is special for my family.
"Today my dad was here but I am sure everybody in our family was watching the TV so it was special. My dad played and knows what it means to play your brother as my uncle was too. I guess he cried a little bit."
Will you swap shirts? "Yeah, we will. I don't know if he wants from another players, but we will for sure."
Kevin also said: "[It was] very amazing for my family and for my team. For us it is great to be here. We wanted to win here today and it is difficult. Liverpool are a great team. I try to enjoy. It is difficult against a big team and I want to enjoy this moment, My family stay here and it is a big moment.
"He is the reason I suffer today but it is a very special moment. Of course, Liverpool in the last match come to Belgium. It is our revenge maybe but today I am only thinking in this game with Alexis and my family and now it is the best part of the match."