Jon Daly was left to rue two vital points lost in the pursuit of Shamrock Rovers as St Pat's conceded an injury time equaliser to Cork City at Richmond Park on Friday night.
With victory within their grasp, the Saints were poised to move to within two points of the Hoops, who experienced a frustrating night in Drogheda and came away with a scoreless draw.
It was Derry who turned out to be the winners on the night, their last minute winner at home to Sligo Rovers moving them level with the Saints - although the Inchicore club remain in second thanks to the narrowest of goal difference advantages.