|Date of birth||14-09-1969|
|Seasons in Monza||1986-1988|
|Caps and goals||23 (-13)|
After two seasons with Monza in Serie C1, he was bought by Milan, which made him accumulate experience in Serie A and Serie B, lending him to Cesena and Modena, and then made his debut in Serie A on April 18, 1992. The experience at Milan , although crowned by two badges, sees Antonioli lose the starting position in favor of Sebastiano Rossi. The goalkeeper restarts from the cadet division, accepting the offer of Pisa: although the season ends with the relegation of the Tuscans to Serie C1, Antonioli is called back to the top flight by Reggiana, then moves on to Bologna, where he will play for four seasons. In the summer of 1999 he was bought by Roma, with which he won the 2001 championship. In the summer of 2003 Antonioli, left free by Rome, moved to Sampdoria. In June 2006 he returned to Bologna after seven years, with whom he signed a two-year contract. Dispute two seasons in B without missing a single game, in 2008 he won promotion to the top flight. In June his contract was renewed for another season. On July 7, 2009, released from Bologna, he signs a two-year contract with Cesena and it is here, as he said, that he will end his career as a professional footballer.
Goalkeeper of the Italian Under-21 national team in the victorious 1992 European championship and the 1992 Olympic Games in Barcelona, ??Antonioli has never worn the shirt of the senior national team, despite the technical commissioner Dino Zoff calling him for the 2000 European Championships.