Ballotta remained at the Stadio Alberto Braglia until the club's relegation at the end of 2003–04, spending the following season with Treviso in the second tier. Despite a fourth-place finish, they were promoted in place of Genoa after the latter were demoted to Serie C1 following a match-fixing scandal, and he was once again back in the top level after rejoining Lazio as a replacement for Fabrizio Casazza as third goalkeeper.