Lazio coach Simone Inzaghi was proud of his players after their 3-0 defeat of AC Milan.
Joaquin Correa struck twice for Lazio before Ciro Immobile's late third completed the scoreline.
“This was like a final for us, the last chance to stay in the running for the top four," Inzaghi told Sky Italia.
“The lads did so well, it was a clear and dominant victory. It ended 3-0, but Gianluigi Donnarumma made saves on Immobile and Correa that only the best goalkeepers in the world can do.
“When Correa is in good shape, he really makes his mark in the big games. He has always had this immense potential and has shaken off some injury issues.
“Milan did well tonight, but they came up against a Lazio side in fantastic condition."
Inzaghi added: "We must try to reach the end of the season without regrets.
“We'll have many games in a short space of time and some of it will be keeping a close eye on bans and injuries.
“When we took over, Lazio wasn't even in Europe. Now we'll qualify for Europe for the fifth consecutive season and hope to be back in the Champions League, but there are other very big clubs all fighting for the same target."