ROME, Aug. 17 (Xinhua) -- Lazio head coach Vladimir Petkovic has asked his side to beef up mentally to beat Juvenuts in the Italian Super Cup on Sunday.
Petkovic conceded Juventus are a stronger side but insisted his side could beat the Serie A champions with a tough mindset.
"If we both play at 100 per cent, then we would have more problems than Juventus, but I am sure we can make life difficult for them. We'll do everything possible to win," he said.
"The Bianconeri are stronger than last term, as they haven't sold any of their big stars and brought in some valid newcomers. It's up to them to confirm that on the pitch, though," he said.
"Our heads must be in top condition, just like in the Coppa Italia Final. Mentality will be fundamental against a very strong Juve," he added.