|Full name||Mariano Esteban Uglessich|
|Date of birth||6 November 1981|
|Place of birth||Buenos Aires, Argentina|
|Height||1.78 m (5 ft 10 in)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 13:52, 6 February 2010 (UTC).
† Appearances (Goals).
He started playing at Vélez Sársfield youth divisions, to debut professionally on February 22, 2002. He played very briefly for Mexican second division Querétaro FC in the first quarter of 2004, but after that returned to Vélez Sársfield. He was part of the team that won the Torneo Clausura 2005 but he hardly ever played due to being relegated by Fabricio Fuentes, Maximiliano Pellegrino and Hernán Pellerano.
During the 2007-08 season, after Pellegrino's departure, Uglessich was a regular starter in Vélez. On 3 February 2009, the central defender left Velez Sarsfield by mutual consent with the club. Arsenal de Sarandí signed the former Velez Sarsfield. On 12 August 2009, he left his homeland Argentina and signed with Albacete Balompie. On 7 January 2010 Albacete Balompie released the Argentine defender at his request. One day later, the player signed for Olimpia Asuncion.
During the Copa Libertadores he showed disrespect for Brazilian Players of Santos, by using racial slurs after the match on his Twitter account.
|Clausura 2005||Vélez Sársfield||Primera División Argentina|
|Apertura 2012||Cerro Porteño||Primera División|
|Apertura 2013-14||O'Higgins||Primera División|
- Medalla Santa Cruz de Triana: 2014