After a season with Saprissa and then Belén, he was transferred alongside compatriot Jewisson Bennett to Zacatepec,[2] of Mexico's professional football league.
He then came back and signed with Saprissa's arch-rivals Alajuelense, earning a place in the starting line-up really quick and remained with the team for 7 years.
[9] He made his senior debut for Costa Rica in a September 1995 friendly match against Jamaica[10] and earned a total of 101 caps, scoring 3 goals.
His final international was an August 2009 FIFA World Cup qualification match against Honduras, after reaching a century of caps in his previous game against Mexico.
[10] In July 2014, Wallace and Pablo Sanz took the reins of the Costa Rica national under-20 football team after coach Rónald "Macho" Mora was sacked.