The match finished 0-0, but Gasperini declared: "There was tension, but only for Samp. We're starting from well behind them, we're rebuilding the club and the team and made them work very hard tonight.
"We've changed 11 players out of 22 and I know we are capable of playing better football. The defence was excellent, but I accept we could do better in attack.
"The defence is our foundation. They were excellent, but we must build our attacking play. I know we can improve."