Regarding what we from Sevilla in this season, they had this team didn't have a performance at all in La Liga but the fact about Sevilla is they are usually successful in Europa League, and Sevilla once again win the trophy while they were not stronger than most of the other teams like Roma and Manchester United.
If I'm not wrong, I think Sevilla won the title seven times, and winning this tournament for seven times is a great achievement for any team.