IT promises to be a big few weeks for Skerries Harps and Naomh Mearnog as they chase glory on two fronts.Both were involved in crucial league games at the weekend which saw Mearnog leapfrog over Harps to claim the crucial last promotion spot in the penultimate series of fixtures. In Naomh Mearnog's 1-8 to 0-10 win away to Cuala, Dublin under-21 skipper Kevin O'Brien fired over the all important free for Conor Deegan's men to ensure they can secure a place in the semifinals regardless of what Skerries do in their last game. Harps face Thomas Davis this Sunday in round three of the senior championship and Dublin captain Bryan Cullen may again be deployed at centre back after lining out there against Erin's Isle on Sunday. Cullen was one of the Dublin players who chose to remain at home with many of the squad jetting off to Spain for a brief respite following the Metropolitans shock exit to Mayo last Sunday week. With Dublin under-21 boss Jim Gavin tipped to take over the hotseat vacated by Pat Gilroy last week, the championship may lead to some new faces popping up as Dublin look to regain their crown in 2013. One person who will be missing from this week's action is Mearnog midfielder, Shane Carthy, who is on duty with the county minors on Sunday week. Mearnog take on Ballyboden St Enda's this Sunday and Conor Deegan's men will be looking to produce another upset after defeating Fingal Ravens in the last round. Former All-Star Shane Ryan proved a key figure for Mearnog in that clash but a recurring back injury rules the dual star out of the Ballyboden clash. In the Intermediate championship meanwhile Fingallians continue their bid to regain their senior status when they take on Clann Mhuire at the Naul on Saturday. Fingallians were without Paul Flynn for their weekend clash with Peregrines which saw the Swords men drop another point in their bid to stay up in Division 3. Flynn hit 2-5 in their resounding 17point win over Finbars in the last round of the championship although their collapse against Finians in their opener means that nothing will be taken for granted for this clash. Newly crowned Division 3 champions Finians take on Good Counsel and will be keeping close tabs on the Quinn twins, Ben and Alex, after the former fired 1-6 for the under-21s when Good Counsel defeated Margerets in the under-21 E final. Donabate's Dinny Corcoran should be the star attraction when St Pat's take on Naomh Olaf in the Naul on Sunday. Corcoran hit 3-2 against St Sylvesters second string in Donabate's crucial Division 3 clash at the weekend. Syls take on St Margarets who struggled badly in the league and will be hoping to salvage something from their season when they meet at the same venue.