Filippo Leoni was born in Cernusco sul Naviglio (Milano) on Septmber 4, 1986. He arrived in Olimpia in 2008. The 2013/14 season's been the first as team manager, responsible for the basketball operations. After playing for Basket Cernusco, Leoni became a coach at 19 when he took the assistant coaching job of the junior team in Cernusco. In 2006, he was named Cernusco's Under 16 team head coach adn assistant coach of the serie C's team. He kept the dual role up to the 2008 summer when he moved to Olimpia Milano to be an assistant coach for the Under 19 and Under 15 teams. In 2009 he assisted for the Under 17 and Under 14 teams; in 2010/11 he worked with the Under 17 and Under 16 teams. In 2011/12 he was the Under 14 team head coach but also assisted Paolo Avantaggiato as team manager. In 2011 he won the Under 15 national championship assisting Stefano Bizzozero and his Under 17 team finished fourth. In 2013 he won antoher National championships with the Under 17 team assisting Paolo Galbiati.