Dušan Tadić felt Southampton were worthy winners after their 2-1 success over Internazionale in Group K.
Tadić was denied by Samir Handanovič from the penalty spot with the last kick of the first-half, the keeper’s third save in from as many penalties in the Europa League.
But the Serbian international insists the turnaround was reward for a dominant display in both periods.
He said: “It was an important win for us because I think we played much better than Inter in the first-half and the second.
“It was difficult, especially when I missed the penalty but we showed the mental strength that we can come back and I think the better team won.”
A sold out St Mary’s was at fever pitch for the visit of one of the most decorated clubs in European football.
That is something Tadić feels helped the players to a vital victory as the group begins to take shape with two games remaining.
Tadić added: “We have great fans and they always support us well. This is a win for everyone together, the fans and Southampton.”