With 18 minutes to go this game two as bizarre as you're likely to see all season, and a red card each for UCD captain Aidan Lynch and St Patrick's top-scorer Marcus Hallows, cited for "violent conduct".
It was St Patrick's who found the net after 72 minutes. Eddie Gormley slotted home a penalty after Lynch tripped Ger McCarthy. Lynch paid the price with a red card from referee John Stacey.
Martin Moran's side responded almost instantly through a John Martin headed goal. Six minutes later Packie Lynch played a harmless pass back to Wood, who under pressure from Mick O'Byrne somehow let the ball slip under his foot for the winning goal.
UCD: Ryan; McLaughlin, Lynch, Delaney, Mahon; Monney, Kavanagh, Martyn, Martin; Bennis, O'Byrne. Subs: Noonan for Bennis (77). Booked: Mooney (30), McLaughlin (50). Sent Off: Lynch (72).
St Patrick's Ath: Wood; Prederville, Lynch, McGuinness, Burke; Croly, Hawkins, Russell, Gormley; Molloy, Hallows. Subs: Byrne for Russell (63), McCarthy for Molloy (63), Harte for Croly (79). Booked: Gormley (18), McGuinness (76). Sent Off: Hallows (90).
Referee: J Stacey (Athlone).
