Declan O'Brien's goal and Finn Harps' surprise home defeat to bottom-of-the-table Waterford United allowed Drogheda United open up a four-point lead at the top of the First Division.
O'Brien's 67th minute strike was enough to beat Cobh Ramblers in a tight game at United Park on Saturday night.
Ex-youth international Gary Dempsey scored twice as Waterford beat Harps 2-1 at Finn Park.
Another brace of goals from Paul McTiernan helped Sligo Rovers get their 5-0 drubbing at Drogheda in mid-week out of their system with a 2-0 win at Kilkenny City.
Limerick punished shocking defending to beat Dublin City 3-2 at Jackman Park yesterday and jump three places to fourth.
Ciarβn Foley punished a poor clearance by Dublin keeper Gary Hogan to put Limerick in front on 37 minutes. An error by Stephen Gifford gave Foley his second on 73 minutes. Tony Sheridan pulled one back on 82 minutes for Dublin but Stephen Donnellan sealed Limerick's win on 90 minutes. Brendan Markey scored for the visitors in stoppage time.
