Guiñazú is a multi-purpose frontrower who can play at both loosehead and tighthead prop as well as hooker. Toulouse used him as a prop as he started four matches and game on as a replacement for four other games. According to the source, Guiñazú could play for Biarritz in next weekends match vs Agen. Curiously, Guiñazú´s previously played for Agen from 2006-2009. His first contract as a professional, however, was with Toulon in the 2005-2006 season and he has also played Super Rugby for the Stormers in South Africa. A return to Biarritz would see Guiñazú join up with three fellow Argentines - Manuel Carriza, Marcelo Bosch and Francisco Gomez Kodela.
Should Guinãzú make a return to Biarritz it would give him a strong chance of a return to Los Pumas. He has played 15 test matches since making his debut in 2003 vs Paraguay. His most recent appearance was vs England in 2009 when he was selected due to the unavaliability of other players. With his hometown of Mendoza set to host South Africa in The Rugby Championship, Guiñazú has everything to play for.