Yonnhy Perez fought all of his professional fights in the United States except for the IBF Bantamweight title eliminator bout in South Africa.
Although born in Colombia, Perez has fought all but one of his professional fights in the United States. Perez faced his biggest challenge on 29 May 2009, when he travelled to Johannesburg, South Africa to fight Silence Mabuza in an IBF Bantamweight title eliminator. 
