|Date of birth||3 August 1988|
|Place of birth||Rome, Italy|
|Height||1.80 m (5 ft 11 in)|
|2015–2016||→ Pro Piacenza (loan)||33||(3)|
|* Senior club appearances and goals counted for the domestic league only.
Born in Rome, Lazio, Alessandro started his career at Eccellenza Lazio (Italian sixth level until 2014) club Mentana Jenne, based in Jenne, in the Province of Rome. In January 2009 he was signed by Lega Pro Prima Divisione (Italian third level) club A.C. Cesena. The club finished as the champion of Group A of 2008–09 Lega Pro Prima Divisione and runner-up in 2009 Supercoppa di Lega di Prima Divisione.
On 1 July 2010 he was signed by Serie B club Grosseto. He made 27 appearances in his maiden season in the second division, as no.88. He wore no.23 shirt in 2011–12 Serie B, which he only played 9 times.
On 13 January 2012 he was signed by Taranto of the third division. The club folded in 2012 due to financial difficulties. A new entity was admitted to 2012–13 Serie D. However Alessandro returned to Voghera instead of remained in Taranto.
In 2013 Alessandro joined Real Vicenza. He scored a goal in pre-season friendly on 3 August. On 5 August 2013 the club was admitted from 2013–14 Serie D to 2013–14 Lega Pro Seconda Divisione, to fill 1 of 7 vacancies, despite at the end of season also saw the merger of the two divisions of Lega Pro, which 18 teams instead of 9 teams would be relegated. Real Vicenza qualified for 2014–15 season as the 7th of Group A. Alessandro also scored 19 goals as team topscorer as well as joint-second topscorer of the fourth division along with Roberto Floriano (Group A) and Francesco Ripa (Group B)
- Grosseto 2010–11 profile (in Italian)
- "Elenco numerazione maglie" (in Italian). US Grosseto FC. 4 August 2011. Archived from the original on 9 May 2014. Retrieved 6 May 2014.
- "Danilo Alessandro è della AS Taranto" (in Italian). AS Taranto Calcio. 13 January 2012. Archived from the original on 20 July 2012. Retrieved 16 May 2012.
- "BUONA LA PRIMA!!!" (in Italian). Real Vicenza VS. 3 August 2013. Retrieved 6 May 2014.
- Il Consiglio Federale (5 August 2013). "Comunicato Ufficiale N°44/A (2013–14)" (PDF) (in Italian). FIGC. Retrieved 22 April 2014.