Regueiro in 2005
|Full name||Mario Ignacio Regueiro Pintos|
|Date of birth||14 September 1978|
|Place of birth||Montevideo, Uruguay|
|Height||1.75 m (5 ft 9 in)|
|2007–2008||→ Murcia (loan)||23||(1)|
|* Senior club appearances and goals counted for the domestic league only
During his professional career he played mainly in Spain, amassing La Liga totals of 167 matches and 25 goals over the course of eight seasons. Other than in his country, he also competed in Greece and Argentina.
Born in Montevideo, Regueiro started his professional career with C.A. Cerro and local Club Nacional de Football. In 2000, he joined Racing de Santander in Spain, having made an immediate impact. In his last year, he ranked second in goals for the Cantabrians – eight, one short of Yossi Benayoun – as they barely avoided relegation.
In late June 2005, Regueiro signed with fellow La Liga club Valencia CF, arriving on a free transfer. With the Che, he was mainly used as a replacement, and also lost the vast majority of his second season due to a severe knee injury; after the campaign was over, he also acquired Spanish nationality.
In the summer of 2008, after a loan to relegated Real Murcia, Regueiro was again loaned by Valencia, now to Aris F.C. for one year, only to receive his free transfer a month later and sign a three-year contract with the Greek team. However, after just one season, he was released, returning to his homeland and Nacional.
Regueiro made 29 appearances for Uruguay, his debut coming on 8 October 2000 in a 2002 FIFA World Cup qualifier against Argentina, a 1–2 away loss. During the final stages in Japan and South Korea, he appeared twice for the nation in an eventual group stage exit, against Denmark (1–2) and Senegal (3–3).
- "Mario Regueiro". BBC Sport. Retrieved 8 August 2012.
- Villa and Regueiro join Valencia; UEFA.com, 22 June 2005
- Work to do for nervous Roma; UEFA.com, 5 December 2006
- El Betis pretende a Regueiro tras lograr el pasaporte comunitario (Betis wants Regueiro after he gets EU passport); Las Provincias, 6 July 2006 (in Spanish)
- "Puso el gancho" [Signature made] (in Spanish). Olé. 11 July 2010. Retrieved 11 July 2010.
- Uruguay – Record International Players; at RSSSF
- Mario Regueiro – FIFA competition record