Stephen Haughian and Eamonn O'Kane both clinched wins in Saturday's bill at the Craigavon Leisure Centre.
Irish welterweight champion Haughian defeated late replacement Poland's Arek Malek as he clinched a 60-54 win in the six rounder.
Haughian had been scheduled to defend his Irish title against Jeff Thomas.
Last year's Commonwealth Games gold medallist O'Kane took his second pro win after Tommy Toland didn't come out for the final round of their bout.
Both boxers had traded blows with abandon in the opening couple of rounds before Dungiven man O'Kane took complete control.
Belfast man Toland's corner men threw in the towel after the end of the fifth round.