|Full name||Matías Emanuel Lequi|
|Date of birth||13 May 1981|
|Place of birth||Rosario, Argentina|
|Height||1.91 m (6 ft 3 in)|
|Playing position||Centre back|
|* Senior club appearances and goals counted for the domestic league only and correct as of 15 October 2017|
Born in Rosario, Santa Fe, Lequi started his career with hometown side Rosario Central, then signed for Club Atlético River Plate where he won two consecutive Clausura titles. In 2003 he moved abroad, joining Atlético Madrid, making his La Liga debut on 31 August in a 0–1 away loss against Sevilla FC and only missing four matches during the season as the Colchoneros eventually finished seventh and qualified for the UEFA Intertoto Cup.
Subsequently, Lequi signed with Italy's S.S. Lazio, going pretty much unnoticed during his one season-spell. For 2005–06 he returned to Spain, being loaned to Celta de Vigo: as the Galicians eventually finished in sixth position and reached the UEFA Cup straight from Segunda División, he was heavily featured, scoring against Real Madrid (1–2 home loss) and former team Atlético (opening the scoresheet in a 3–0 away win).
After extensive negotiations, the deal with Celta was made permanent in late May 2006, for four years. Lequi would however suffer relegation in the first season after his purchase and, with the club already in the second level, was sent off a total of four times in the league, as Celta languished in 16th position; he was released in August 2008.
Lequi spent the following months training on his own. In the 2009 summer transfer window, he moved to Greek side Iraklis Thessaloniki FC. On 19 January 2011, the free agent returned to Spain and signed a five-month with UD Las Palmas, in division two.
- River Plate
- "Baptista frena en seco al Atlético" [Baptista stops Atlético in its tracks] (in Spanish). El Mundo. 1 September 2003. Retrieved 18 June 2014.
- Lazio: Definito l’ingaggio di Lequi (Lazio: Lequi's purchase concluded); Supereva, September 2004 ‹See Tfd›(in Italian)
- "Ejercicio de supervivencia en Balaídos" [Exercise in survival at Balaídos] (in Spanish). El Mundo. 30 January 2006. Retrieved 18 June 2014.
- "El Celta descuelga al Atlético de Europa" [Celta make Atlético lose grip on Europe] (in Spanish). 20 minutos. 2 April 2006. Retrieved 18 June 2014.
- El difícil acuerdo con Lequi (The difficult agreement with Lequi); Faro de Vigo, 26 May 2006 ‹See Tfd›(in Spanish)
- "Matias Lequi" (in Spanish). Yo Jugué en el Celta. 19 December 2010. Retrieved 18 June 2014.