The last Liga Profesional Argentina appearance that Ríos made came on August 17, 2019 for Unión versus Newell's Old Boys; a meeting that he played 59 minutes in during a 2-0 defeat.
A home match against Atlético Tucumán on December 5 is the club's next Liga Profesional Argentina game for Unión, who have seven points and are in second spot.
In last season's Liga Profesional Argentina, Ríos played in two games for Unión.