|Full name||Mariano Esteban Uglessich|
|Date of birth||6 November 1981|
|Place of birth||Buenos Aires, Argentina|
|Height||1.85 m (6 ft 1 in)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 25 May 2015.
Vélez Sarfield, Mexico and Arsenal
He started playing at Vélez Sársfield youth divisions, and debuted professionally on 22 February 2002. He played very briefly for the Mexican League System Segunda División Profesional 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 overshadowed 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.
Back to South America: Paraguay
After the match he played on 8 January 2010, he used his Twitter account to make racial slurs about the Brazilian Players of Santos. In 2012 he signed with Cerro Porteño, where he was champion of the Torneo de Apertura 2012.
In 2013, he signed with the Chilean Club O'Higgins, where he won the Apertura 2013-14. In the tournament, he played in 12 of the 18 matches. In 2014, he won the Supercopa de Chile with the club, playing against Deportes Iquique, and failing the fifth penalty in the penalty shoot-out.
He left the club in the second half of 2014, and signed with Universidad Católica del Ecuador.
- Vélez Sarfield
- Cerro Porteño
- Medalla Santa Cruz de Triana: 2014
- El argentino Mariano Uglessich se incorpora al proyecto del ALBACETE