Juve won 2-0 thanks to goals from Paulo Dybala and Juan Cuadrado.
Sarri said, “We did what we had to do. It was a decent start, once we broke the deadlock, we showed patience, hit the woodwork three times and more than earned the victory.
“It's a complicated situation, as we have many strong players who don't have a specific role, they are all fairly atypical. Dybala is a forward, but is good at coming back. Cristiano Ronaldo likes to play wide, Cuadrado can play many different roles.
“We decided to let Ronaldo rest today, as he cannot play every single game, so we came up with this system for this game. At this moment, we are playing more with a trident than a trequartista. That's because Ramsey has made it clear he prefers to play in midfield rather than as a trequartista. Dybala prefers to be more advanced.
“I thought Ramsey was improving over the last couple of games, he's much better in the movements and doing well in defence too. It's clear throughout history that English players struggle to settle into Italian football, as we are far more tactical and not quite as free as they are in the Premier League, but I believe he's over the hump and on his way towards making a real difference."