Colin White scored at 1:34 of overtime and the Ottawa Senators snapped an eight-game losing streak by rallying for a 2-1 victory over the reeling Anaheim Ducks.
It was a franchise-record ninth straight loss for Anaheim, surpassing an eight-game skid in October 1996.
Bobby Ryan also scored for the Senators, and Anders Nilsson stopped 32 shots.
Jakob Silfverberg had Anaheim's lone goal, and Gibson made 28 saves.
The Ducks have played an NHL-leading 13 overtime games at home and are 5-6-2.