|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)|
|Universidad Católica del Ecuador|
|2014-||Universidad Católica del Ecuador|
|* Senior club appearances and goals counted for the domestic league only and correct as of 13:52, 6 February 2010 (UTC).
† Appearances (Goals).
Vélez Sarfield, Mexico and Arsenal
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.
Back to South America: Paragauay
On 8 January 2010, Uglessich join in the paraguayan club 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. In 2012 signed for Cerro Porteño, where he was champion of the Torneo de Apertura 2012.
In 2013, after signed with the Chilean club O'Higgins, he won the Apertura 2013-14. In the tournament, he played in 12 of 18 matches. On 2014, he won the Supercopa de Chile with the club,playing against Deportes Iquique,and failing the fifth penalty in the penalty shoot-out. After leave the club, he decided to join in Universidad Católica del Ecuador.
- Vélez Sarfield
- Cerro Porteño
- Medalla Santa Cruz de Triana: 2014