UCD will take on St Mary's Belfast and UCC must face NUI Galway in the Sigerson Cup semi-finals after the last eight of the premier college football competition today.
Last year's runners-up NUIG pipped Ulster University by a single point in Abbotstown, 1-08 to 1-07.
Peter Cooke fisted them into the lead four minutes from time before UUJ had a last-minute free to level that they couldn't convert.
Kieran Molloy had scored an early goal to give NUIG a platform before Daire Gallagher struck for UU to cut Galway's lead to 1-04 to 1-03 at the break.
Molloy hit the headlines last year when he travelled straight from Corofin's All-Ireland semi-final win over Moorefield to face UCD in the Sigerson decider in Dublin.
He and clubmate Liam Silke (UCD) are facing the same dilemma next month as defending champions Corofin play Gaoth Dobhair in Carrick on Shannon on Saturday 16 February - the same day as the Sigerson semis in Mallow.
Even allowing for the 1.30pm throw-in time in Leitrim a repeat would seem unlikely given the three-hour trip involved.
NUIG will face UCC, who weren't tested in their 4-21 to 0-05 hammering of IT Carlow at the Mardyke.
Kerry pair Paudie Clifford (2) and Sean O'Shea, and Colin Horgan all hit the net as the Cork college pushed on from a 2-14 to 0-02 interval advantage.
Down to the final 4 in the @ElectricIreland Sigerson Cup@UCDGAA v @StMarysBelfast @ucc_gaa v @nuiggaa1— HE GAA (@HigherEdGAA) February 6, 2019
Semi finals to be played on Saturday 16th in Mallow GAA complex.@officialgaa @OfficialCorkGAA @MunsterGAA #FirstClassRivals #SigersonCup
Holders UCD outgunned city rivals DCU at Belfield.
Dublin star Con O'Callaghan won an early penalty that Laois' Evan Carroll converted but a goal from Monaghan man David Garland cut UCD's lead to just two points at the break, 1-08 to 1-06.
DCU only managed three more scores in the second period, however, as Cian O'Connor added another goal and recent Dublin debutant Darren Gavin cut loose with 0-04 from play as it finished 2-16 to 1-9.
Earlier today, St Mary's Belfast edged Maynooth University by 0-15 to 0-13 to become the first team to reach the last four.
The 2017 winners trailed by a point at the break, 0-08 to 0-07 but scored four without reply to hit the front.
Maynooth fought back, with Padraig Fogarty and Stephen O'Hanlon in fine form, but Shane McGuigan (0-05) helped St Mary's to pull clear again for a lead they didn't relinquish.