Stratford Warriors conceded three straight goals, including the overtime winner, in a 5-4 loss Wednesday night against the LaSalle Vipers.
Julian Gignac had a hat trick for the Vipers, while Colin Slattery had a pair of goals for the Warriors.
Matteo Vilardi and Max Brocklehurst, with the winner in the first OT session, also scored for LaSalle.
Tyler Kelly and Hudson Binder had singles for Stratford.
Stratford are in second place in the GOJHL Western Division, just a point behind Lasalle.
St. Marys are in Sarnia tonight for a 7:10 p.m. start.