In the UEFA League final, Chelsea defeated Real Betis 4-1, which is also Maresca's first European trophy to coach Chelsea.

In the 2018-19 season, Real Betis' coach Pellegrini coached West Ham United, while Maresca served as an assistant coach for the Hammers. The master and apprentice gathered again, and Chelsea led by Maresca was even better.

It is worth mentioning that Pellegrini has coached the European team for 21 years and has not won a European trophy (only led Huang Qian to win two UEFA International Toto Cups).