Andrea Stramaccioni's side started the new campaign in fine fashion and Cassano was quick to praise the team's efforts after the game.
"The important thing was the three points. [The] performance was good, the team played well, I'm happy with this first game," Cassano told Sky Italia.
"It is easy to play with Milito and Sneijder. [They] are two high-level players, for me it's easier to play with them."
And despite the impressive performance, Cassano was quick to highlight where he and his team-mates can improve in the weeks ahead.
"We need to improve physically, if we improve physically we can improve even more at the level of play," he added.