|Full name||Mário Sérgio Leal Nogueira|
|Date of birth||28 July 1981|
|Place of birth||Paredes, Portugal|
|Height||1.74 m (5 ft 8 1⁄2 in)|
|Playing position||Right back|
|2005–2006||→ Vitória Guimarães (loan)||16||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 31 May 2014.
† Appearances (Goals).
Born in Paredes, Sérgio started his career also in the north, at F.C. Paços de Ferreira, before moving to Portuguese League giants Sporting Clube de Portugal in 2003–04. After just twelve appearances in two seasons combined, he was loaned to Vitória de Guimarães for the 2005–06 campaign.
In the summer of 2006 Sérgio joined Associação Naval 1º de Maio on a free transfer, although he still had a one-year plus option contract with the Lisbon club. He was the Figueira da Foz side's first-choice right-back through 2006 to 2008, as Naval consecutively retained its top flight status.
In July 2008, Sérgio joined FC Metalurh Donetsk in Ukraine. On 15 May 2012, after four Premier League seasons always as a starter, he signed a two-year contract with APOEL FC from Cyprus, where he won the First Division championship in 2013, the first major accolade of his career.
On 17 August 2013 APOEL beat Apollon Limassol 1–0 to win the Cypriot Super Cup, and Mário Sérgio scored a rare goal in the 35th minute. During the season he appeared in five games in the group stage of the UEFA Europa League, and helped his side conquer the treble as it went on to add the league and the Cup.
Sérgio played for the Portuguese under-21s during two years, representing the nation at the 2004 UEFA European Under-21 Championship, and was also in squad for the 2004 Summer Olympics football tournament.
|Club||Season||League||National Cup||League Cup||Continental[a]||Other[b]||Total|
|Paços de Ferreira||2000–01||Primeira Liga||2||0||0||0||—||—||—||2||0|
|Vitória Guimarães||2005–06||Primeira Liga||16||0||1||0||—||6||1||—||23||1|
|Metalurh Donetsk||2008–09||Ukrainian Premier League||30||0||3||0||—||—||—||33||0|
|2009–10||Ukrainian Premier League||29||2||4||0||—||6||1||—||39||3|
|2010–11||Ukrainian Premier League||27||0||1||0||—||—||—||28||0|
|2011–12||Ukrainian Premier League||17||2||2||2||—||—||—||19||4|
|APOEL||2012–13||Cypriot First Division||24||3||2||1||—||6||1||—||32||5|
|2013–14||Cypriot First Division||35||2||4||0||—||9||0||1||1||49||3|
|2014–15||Cypriot First Division||0||0||0||0||—||4||0||1||0||5||0|
- "Mario Sergio" (in Greek). APOEL FC. 15 May 2012. Retrieved 15 May 2012.
- "APOEL FC 1–0 APOLLON". APOEL FC. 17 August 2013. Retrieved 17 August 2013.
- "Sheridan strike hands APOEL Cypriot title". UEFA.com. 31 May 2014. Retrieved 31 May 2014.
- "ΕΡΜΗΣ ΑΡΑΔΙΠΠΟΥ 0–2 ΑΠΟΕΛ" (in Greek). APOEL FC. 21 May 2014. Retrieved 21 May 2014.
- Mário Sérgio – FIFA competition record
- "Mário Sérgio". ForaDeJogo. Retrieved 2 April 2014.
- "Mário Sérgio". Soccerway. Retrieved 2 April 2014.