No, he did not buy the company. According to RSI magazine (and who doesn't read it?), Agassi has ordered 46 Donnay Dual XP rackets for this year (senior tour and exos I suppose), paying for them himself (can he afford it?). It is emphasized by Donnay that he is not sponsored by them and will not be appearing in any of their promotions. He playtested 25 frames from 4 manufacturers, and chose Donnay.