Born in Cava de' Tirreni, Campania, Sorrentino started playing football with S.S. Lazio, finishing his youth training with Juventus FC in 1997 and failing to collect any official first-team appearances during his one-season spell.

He returned to Torino in the 2001 off-season, being a backup in the top division (twelve games) and an undisputed starter in the second level during his tenure; in his final campaign he made 43 league appearances for Toro, who finished second and promoted via the playoffs, only to be denied due to financial irregularities.

Sorrentino then signed with AEK Athens[2] but, after the birth of his daughter, he asked president Demis Nikolaidis to let him return to Italy, because his wife was not feeling comfortable enough in Greece.

[3] In July 2007, after failing to win any silverware in two seasons, Sorrentino was loaned to Recreativo de Huelva, with the Spanish side having the option to sign him on a full basis at the end of the campaign.

[6] After Recreativo did not exercise the buying option, Sorrentino returned to his country and signed with A.C. ChievoVerona – freshly promoted to the top flight – initially on loan.

He played in 32 league games during the season as the team retained their newly found status, and the move was made permanent on 12 June 2009.

[19] Ahead of their final fixture of the campaign, where they finished last,[20] he posted on Twitter: "I wish to whoever will take my place, to whoever will take my locker, to whoever will wear the Chievo shirt after me, to sweat, struggle, and fight.

[15][16] On 21 January 2020, Sorrentino announced his retirement from professional football on Sky Sport's television program Calciomercato.

[21] However, on 27 January 2020, Sorrentino announced his transfer to Seconda Categoria side Cervo, coached by his father Roberto, and that he would play as a striker.

[22] In June 2021, he retired permanently and fully engaged in his new career as a football agent, representing Palermo goalkeeper Alberto Pelagotti.

[43][44] On 31 December 2018, he proposed to her by giving her a pair of his goalkeeping gloves with the text "Sara, mi vuoi sposare?"

[47] In March 2017, Sorrentino released his autobiography: Gli occhi della Tigre ("The eyes of the Tiger," in Italian).