Sergio Conceicao has fond memories of beating Juventus as a player for Lazio and hopes to upset them again as coach of Porto.
The first leg of the Champions League Round of 16 tie kicks off in Oporto on Wednesday at 20.00 GMT.
Conceicao is no stranger to Serie A, having played for Lazio, Parma and Inter.
“I remember my first title won in Turin against Zinedine Zidane and Alessandro Del Piero’s Juve,” he told Sky Sport Italia.
“I scored the goal for Lazio to win 2-1 after Del Piero had cancelled out Pavel Nedved’s opener. Italy is my second country and I was very happy there. Perhaps I was a little less happy on a sporting level at Inter than the others, but it remains a wonderful memory anyway.”
His Lazio won the Scudetto, Supercoppa, Cup Winners’ Cup, UEFA Supercup and two editions of the Coppa Italia.
Conceicao will be facing Juventus as a coach this time and believes they can cause an upset.
“We’re not doing that well in the league, as we leave too much space to the opponents, but have been much stronger both defensively and when attacking in the Champions League.
“I feel it’s important to have that balance and we’ve had some good games. Every match is unique and tomorrow we’ll be up against one of the best teams in the world, who have fantastic players.
“It is crucial that we are solid in defence and, when we have the ball, find the right spaces to exploit in order to score goals.”