Born in Torre Annunziata, in the province of Naples, Immobile began his youth career in the football school “Torre Annunziata ’88”, before transferring to “Maria Rosa” and finally the youth team of Salernitana, where however, he failed to emerge. He later joined Sorrento, with whom he scored 30 goals in the under-17 during the 2007–08 season, including a brace against Torino, impressing the observers of Juventus. In 2008, he was signed at the age of 18 for €80,000 by Juventus under the recommendation of Ciro Ferrara. He went on to play with the Primavera formation. Immobile joined the Primavera squad in 2009, where he formed a striking partnership with Ayub Daud, that led the squad to win the 2009 Torneo di Viareggio, where he scored a total five goals; two of which came in the final. On 14 March 2009, Immobile made his Serie A debut in a 4–1 home win against Bologna, replacing Juventus’ captain Alessandro Del Piero in the 89th minute. On 25 November 2009, Immobile also made his debut in a European competition, once again as a second-half substitute for Del Piero in a Champions League game against Bordeaux. In February 2010, he scored a hat-trick against Empoli in the 2010 Torneo di Viareggio final to seal the title for a second consecutive season. Immobile signed with Lazio on July 27th 2016, for a fee of €8.75 million (plus €700,000 commission to agents). On 21 August, Immobile scored on his debut in Lazio’s opening match of a 4–3 away win over Atalanta. Immobile finished the season with 23 league goals in 36 appearances plus 3 goals in the Coppa Italia, surpassing his total when he won the Capocannoniere with Torino in the 2013–14 season, though this time he did not win the Capocannoniere, losing it to Bosnian striker Edin Džeko of cross-town rivals Roma, who scored 29 league goals. On 13 August 2017, Immobile scored the opening two goals of the Supercoppa Italiana; Lazio won with a final score of 3–2 over Juventus. On 10 September, in Lazio’s third match of the season, he scored a hat-trick and got an assist in a 4–1 home win over Milan. On 21 October, Immobile extended with Lazio until 2022. On 6 January 2018, Immobile scored four goals in the first half away to SPAL, the first Lazio player to score multiple hat-tricks in a season in 16 years; Lazio eventually won the match 5–2. On 22 February 2018, Immobile scored a hat-trick in the Europa League round of 32 second leg home to Steaua București in a 5–1 win, which allowed Lazio to qualify, 5–2 on aggregate, to the round of 16. On 31 March 2018, Immobile scored twice in Lazio’s 6–2 home win over Benevento, his 36th goal of the season, breaking Giorgio Chinaglia’s previous record for most goals scored by a Lazio player in a single season, by two goals. Immobile ended the season with 29 goals in 33 appearances, winning the Capocannoniere jointly with Inter’s Mauro Icardi.