The New Jersey-born Italy international opened the scoring in La Viola's 2-1 victory over Catania to tally his first goal since October 2011.
Rossi scored his first goal in a competitive club match since doing so for Villarreal on Oct. 1, 2011, opening the scoring in Fiorentina's 2-1 victory over Catania in the season-opening fixture for both clubs on Monday.
Starting alongside former Bayern Munich striker Mario Gomez, Rossi received a cutback pass from Juan Cuadrado, settled and fired a right-footed shot from about eight yards out in the 14th minute. Catania's Pablo Barrientos equalized eight minutes later, but David Pizarro put La Viola ahead to stay at Stadio Artemio Franchi in the 28th minute.
Rossi was taken off after 66 minutes, marking his second lengthy run-out this summer. He started and played 68 minutes in the first leg of Fiorentina's UEFA Europa League play-in tie against Swiss side Grasshopper on Thursday. Most importantly, he emerged unscathed from both matches.
The New Jersey-born Rossi tore his ACL twice in a six-month span while playing for Villarreal, injuries that forced him to be out for 16 months, which included Italy's involvement in Euro 2012. He signed a four-and-a-half-year deal with Fiorentina last January and returned to training last March before making one appearance against Pescara on the final day of the Serie A campaign.
He is aiming to get back to the form that saw him score 32 goals in all competitions in 2010-11 and become a regular for Italy.