Throughout his career, Siviglia played over 250 matches in the Italian Serie A for several clubs, in particular Lazio, where he made over 150 league appearances.

He played the first Serie A match on 22 September 1996 against Fiorentina as starter, which the Veneto side lost 0–2 to la viola.

In 1998, he was signed by newly relegated league rival Atalanta, in exchange with Paolo Foglio,[1] and won promotion back to Serie A in 2000 after finishing 4th.

He finished seventh in 2000–01 Serie A season with the Lombardy side, but was provisionally banned two months for suspected match-fixing along with team-mate Fabio Gallo and Luciano Zauri.

He played five league matches under Fabio Capello, as the club had internationals players Cafu, Aldair, Walter Samuel, Zago, Christian Panucci, Vincent Candela and Jonathan Zebina.

Roma finally fined €60,000 by Criminal Court of Rome for irregularity on youth players transfers only on 30 October 2007.

In August 2003, he left for another Serie A side Lecce,[15] where he partnered with the rising star Cesare Bovo, which also one of the few youth players sold by Roma in 2002 and not a flop.

Siviglia was selected by Delio Rossi along with Cribari as a central defender pairing and secured sixth place for the club.

As one of the most experienced players in the squad, Siviglia had deputized as captain on many occasions, and before the start of the 2008–09 season, he was selected as vice-captain behind Tommaso Rocchi and Cristian Ledesma.

[citation needed] He missed two months again since November 2008 due to injury[32][33] He returned to the squad on 22 January 2010 against Torino in the Coppa Italia.

As he had only one year left on his contract with Lazio and aged 36, he became less active as part of the starting XI, partially due to injury and the coach failing to find the best central pair.

He played both legs of the UEFA Europa League play-off round, but was replaced by Aleksandar Kolarov in the 23rd minute on 27 August 2009, as he suffered muscle problems.

For the match against Villarreal, Siviglia did not have a place in the final XI, as the coach preferred Ștefan Radu partnered with Cribari, and Diakité was the only central back on the bench.

Four days later, he traveled to Spain for the European match against Villarreal, in which he partnered with Diakite again and Radu moved to fullback position, but he was substituted at half-time with Mauro Zárate in order strengthen the attack.

Ballardini resumed the experimental Siviglia-Radu pair and the coach disliked Cribari who often collect yellow cards, but the team lost again to Milan in round 12.

Since the arrival of the new coach Edoardo Reja, he did not play in the game against Palermo in the Coppa Italia, but returned as part of the three-man defence in the next match (round 20).

On 15 May, in the last game of the season, Siviglia returned to the starting XI, with new experimental partners André Dias and Giuseppe Biava in their 3-5-2 formation.

[46] On 11 August 2016, Christian Panucci, who was hired as the head coach for the senior squad of Ternana earlier that summer, was fired by the club after one game in charge.