According to the Italian Autorità Garante della Concorrenza e del Mercato, as a sports agent in 2006, D'Amico ranked in fifth place for market share by volume (2.62%) and in second place for market share by value (8.6%) [REF].
Together with his associates, D'Amico has worked on signings for numerous footballers, including Francesco Toldo, Dino Baggio, Salvatore Bocchetti, Domenico Criscito, Marco Donadel, Luca Rigoni, Marco Rigoni, Maxi López, Luca Antonini, Ignazio Abate, Vincenzo Iaquinta, Alberto Aquilani and Ishak Belfodil.