Rubén Ruiz Díaz

Born in Asunción, Ruiz Díaz began playing football in the youth side of Club Rubio Ñu, before making his senior debut for the club at age 15. He played professional football in the Primera División Argentina and Primera División de México. On 14 March 1993, while Ruiz Díaz was playing for Monterrey in a match against Leon, a strong shot from Leon forward Isaac Ayipei knocked Ruiz Díaz unconscious. He regained consciousness after six hours in hospital. Initial reports had indicated that he had suffered a broken jaw but that was corrected.

Ruiz Díaz made his international debut for the Paraguay national team on 9 July 1989 in a 1989 Copa América match against Brazil (2–0 loss). He obtained a total number of 11 international caps, earning his last cap in 1998.