The 27-year-old hit the only goal of the match for Antonio Conte's side in 54th minute to seal their second win on the trot after beating Parma 4-1 last week.
Speaking after the match, Matri insists topping the table now means little as he urged his side to focus on their next game against Bologna on Wednesday.
"Topping the table doesn't mean much now as we've only just played the second game of the championship," Matri was quoted as saying by Tuttosport.
"There are important signs there that we are on the right track, but now we've just got to work hard and think about Wednesday's game.
"Last year we would have dropped points in games like these. We came up against a team that was well set up on the pitch.
"We had to move the ball around quickly and work hard to find space in order to score. Thankfully, we were able to do this."