Monaco coach Didier Deschamps admitted Porto's greater experience was key to the Portuguese side's 3-0 victory in the European Cup final.
Porto also won the Uefa Cup final in 2003 and once Carlos Alberto gave coach Jose Mourinho's side a first-half lead they looked in total control.
Deschamps said: "It was difficult because Porto had more experience.
"In a final that's important. I'm disappointed for my players they have done so well in a long, long season."
Deschamps added: "We have ended up with nothing. This final was a first occasion for my players and it proved too complicated for us."
Monaco's French coach also admitted losing Ludovic Giuly in the first-half through injury was a big blow to his side's hopes of troubling Porto.
Deschamps said: "Giuly's injury was not good news for us - he is a very important for us on the offensive side."