The Eagles coach praised his team having secured a passage to the Coppa Italia final with a wild, last-minute victory over Juventus.
The Biancocelesti survived an exhilarating semifinal and emerged 2-1 winners on the night (3-2 on aggregate) after Sergio Floccari's 95th minute winner cancelled out Arturo Vidal's equalizer moments earlier.
Lazio goalkeeper Federico Marchetti kept out a Sebastien Giovinco effort at the death, and Claudio Marchisio failed to convert the rebound into an empty net, prompting Petkovic to single out his goalkeeper for special praise while reflecting on the tie as a "crazy game."
“We are satisfied with the result, and that was a crazy game at the end, but we had the right determination to take home the result,” Petkovic told reporters. “We deserve this joy and must always play at this level, as a great team cannot afford dips in intensity during a season. The squad is really growing and tonight’s performance proved it against a strong side like Juventus.
“Marchetti is having a fantastic season, not just in the individual saves, but the way he does his work and he is a reference point in the locker room.”
Lazio will meet either Roma or Inter in the final, and while Petkovic admits a local derby against Michael Bradley's Roma side would make for a memorable match, he insists the opposition does not matter.
“We want to win the Coppa Italia, regardless of who our opponents will be. For the fans, a Rome derby in the final would be the ultimate game, but I have no preferences," Petkovic said.