In July 2006, aged 33, he left Udinese to join Siena, another Serie A team, where he played two seasons as a regular for the Tuscan side.
[1] Bertotto has played four times for the Italy national football team between 2000 and 2001, all during his spell at Udinese, with his senior international debut coming in a World Cup qualifying match against Georgia on 11 October 2000, held in Ancona, under manager Giovanni Trapattoni.
Although he was neither particularly quick nor technically gifted, he made up for his lack of pace and skill with his experience and positional sense, and his greatest strength was his ability to defend opposing forwards in one-on-one situations.
[3] On 9 August 2012 he was named head coach (Italian: selezionatore) of the Italy U20 Lega Pro in place of Giorgio Veneri.
In March 2017, he returned to management, accepting an offer from Serie C club Bassano Virtus, with whom he qualified for the promotion playoffs.