Breheny struck in the 52nd minute – from midfielder Stephen Gilmartin’s assist – to put Sligo six points up, 1-11 to 0-8, and finally crush a GMIT side that had seen the students lead 0-5 to 0-4 at half-time.
Andy Glennon kicked 0-4 for GMIT.
Scorers for Sligo: Mark Breheny 1-5 (0-3f), Padraic Clarke 0-3, Stephen Gilmartin 0-2, Niall Murphy (0-1, 1f), James Hynes, Kenneth Sweeney 0-1 each.
Scorers for GMIT: Andy Glennon 0-4 (0-2f), Darragh Joyce 0-3 (0-2f), Stephen McDonnell 0-1.
SLIGO: V Cadden, E Flanagan, B McGarry, D Maye, L Bree, N Gaughan, G Cadden, S Gilmartin, S Stenson, B O’Mahony, M Breheny, N McDonagh, J Hynes, H Marren, P Clarke.
Subs: N Murphy for H Marren, h-t; P Hughes for N McDonagh, 39; R O’Donovan for B McGarry, 40; N Ewing for S Stenson, 49; K Sweeney for M Breheny, 54; D O’Boyle for S Gilmartin, 56.
GMIT: C Nolan, J Madden, B O’Farrell, D Moran, K Nally, P Holloway, S O’Malley, M O’Brien, S McDonnell, C Donoghue, A Molloy, D Styles, M Farragher, A Glennon, D Joyce.
Subs: K Reddington for J Madden, 36; M Shaughnessy for D Styles, 39; R Geraghty for S McDonnell, 55; R Sweeney for D Joyce, 55; G McLoughlin for S O’Malley, 60+1.
Referee: John Glavey (Mayo).