Substitute Fiachra Deasmhumnaigh was the hero for NUI Galway as he landed a late point to secure victory in an entertaining clash at Dangan.
The Cork native kicked the decisive point from the right wing as the game slipped into stoppage-time.
NUI Galway should have wrapped up the issue long before that but they failed to turn their third-quarter dominance into scores. Indeed, the Galway college managed just three points from play, with the promising Mayo player Jason Doherty the main scoring threat, kicking 0-7 from frees.
Sligo IT enjoyed good spells in the first half, with Monaghan's Gary White kicking three excellent points from play before adding a brace on the restart after the sides were deadlocked at 0-6 each at the break.
Sligo looked set for victory when hitting three points without reply from White (two) and Adrian Croal to lead by 0-10 to 0-8 with six minutes left. But NUIG, with Peadar Gardiner dominant at wing-back, hit back and Doherty and Douglas levelled before Deasmhumnaigh sealed the win.
SCORERS -- NUI Galway -- J Doherty 0-7 (0-7fs), N Douglas 0-2 (0-1f), C Mimnagh, F Deasmhumnaigh 0-1 each. Sligo IT: G White 0-5 (0-1f), A Croal, E Keating (0-1f) 0-2 each, D Gallagher 0-1.
NUI Galway -- N King; S McHale, C McDonald, R Rochford; P Gardiner, K O'Connor, D Newcombe; S Gilmartin, B Geraghty; D Coroon, C Mimnagh, M McHugh; N Douglas, G Higgins, J Doherty. Subs: J Moore for Newcombe (18), F Deasmhumnaigh for Geraghty (53), D Wynne for Mimnagh (54).
Sligo IT -- A Flaherty; D Reynolds, P Gleeson, P Maguire; P Kelly, K Keane, D Daly; S Mannion, M Brady; G White, E Keating, G Gaughan; A Croal, K Sweeney, D Gallagher. Subs: P Garvey for Mannion (29), K Rodgers for McHugh (43), K Cawley for Daly (49), M Leddy for Keane (52).
Ref -- S Hehir (Galway).