Both teams ended with 14 players Offaly’s Peter Cunningham and Leitrim’s Gerry Hickey being dismissed.
Playing against the breeze Leitrim led by 0-4 to 0-3 at the interval with Wayne McKeon kicking an early point while Emlyn Mulligan added two more shortly after.
Offaly were on level terms within three minutes of the break after a fine Brian O’Connor effort.
It was tit for tat after that with Darby claiming victory for Offaly at the end.
Scorers for Offaly: B O’Connor, A Mulhall (2fs) 0-2 each, R Brady, J Maher, A McNamee, P Cunningham, B Darby 0-1 each.
Scorers for Leitrim: E Mulligan 0-6 (4fs), W McKeon, J Glancy 0-1 each.
OFFALY: A Mulhall; B Darby, P McConway, S Pender; G Guilfoyle, S Sullivan, M Brazil; B Connor, A McNamee; J Maher, W Mulhall, E Carroll; R Dalton, R Brady, P Cunningham.
Subs: A McNamee for W Mulhall (44).
LEITRIM: B Flynn; P Brennan, C Egan, P Maguire; S McWeeney, E Williams, P D Beck; W McKeon, T Beirne; C Reynolds, E Mulligan, G Hickey; B McDonald, J Glancy, K Conlan.
Subs: R Cox for Conlan (HT); P McGowan for Reynolds (47); C Beirne for Glancy (62).
Referee: S Hurson (Tyrone)