"It was crucial to score goals on our return to the Champions League and the lads played a great game."
Del Piero opened the scoring with a stunning strike remarkable for its power and precision, but also inspired his teammates with some great touches.
"Alessandro is going through a wonderful period of form. He was unable to do the pre-season training he wanted last term and suffered because of that situation, but he is in great shape and everyone can see that," continued Ranieri.
"I think each half is a game in and of itself, so really this tie is four matches and we are only midway through. The result has to be earned in Slovakia."