|Date of birth||15 August 2001|
|Place of birth||Cesena, Italy|
|Height||1.88 m (6 ft 2 in)|
(on loan from Genoa)
|2021–||→ Reggina (loan)||1||(0)|
* Senior club appearances and goals counted for the domestic league only and correct as of 14 May 2021|
‡ National team caps and goals correct as of 19 November 2019
Petrelli joined the Juventus youth teams in the summer of 2016. He made his Serie C debut for Juventus U23 on 23 December 2018, in a game against Virtus Entella as a 72nd-minute substitute for Stephy Mavididi. On 22 November 2020, Petrelli scored a hat-trick during the 2020–21 season against Pistoiese, helping Juventus U23 win 3–2.
On 29 January 2021, Petrelli moved to Genoa for a fee of €8 million, plus a maximum of €5.3 million in performance-related bonuses. He was subsequently loaned to Reggina until the end of the 2020–21 season.
Petrelli was first called up to represent his country for the under-16 squad in a friendly against Turkey in December 2016. He was called up to the under-17 team for the Euro qualifiers in October 2017, but remained on the bench in all three games.
- "Alla scoperta di Elia Petrelli, il centravanti che guiderà la Juventus Primavera" [Discovering Elia Petrelli, the striker who will lead Juventus Primavera]. Spazio J. 23 July 2018.
- "Game Report by Soccerway". Soccerway. 23 December 2018.
- Baridon, Marco (2020-11-22). "Pagelle Juventus U23-Pistoiese: Petrelli decisivo, Di Pardo instancabile VOTI". Juventus News 24 (in Italian). Retrieved 2020-11-22.
- "UFFICIALE | Portanova, Petrelli, Rovella: gli accordi con il Genoa". Juventus.com (in Italian). 28 January 2021. Retrieved 29 January 2021.
- "Elia Petrelli è un calciatore amaranto" [Elia Petrelli is an amaranth footballer]. reggina1914.it (in Italian). 31 January 2021. Retrieved 31 January 2021.
- "Petrelli Italy U17 profile" (in Italian). Italian Football Federation. Retrieved 7 January 2019.
- "Petrelli Italy U18 profile" (in Italian). Italian Football Federation. Retrieved 7 January 2019.
- "Petrelli Italy U19 profile" (in Italian). Italian Football Federation. Retrieved 7 January 2019.