On 5 January 2014, Rossi was substituted in Fiorentina's match against Livorno as he suffered a second-degree sprain of his medial collateral ligament in his right knee. The blow was dealt by Leandro Rinaudo, who tackled Rossi from behind in a manner so dirty that he drew international condemnation. Up to this point Rossi had been the leading goal scorer in Serie A with 14 goals in 18 league appearances.