Matt D'Agostini scored the game-winning goal 2 victory over the Carolina Hurricanes from Scottrade Center.
With about a minute to go, the Blues won a key offensive zone faceoff and the puck made its way to Vladimir Sobotka in the right corner. Sobotka found D'Agostini standing alone in front and the winger one-timed it in behind Cam Ward at 3:58 of the overtime period.
Blues captain David Backes and veteran forward Jason Arnott scored, while Brian Elliott made 27 saves for the Blues, who snapped a two-game skid.
Brandon Sutter had a goal and an assist and Jay Harrison scored for Carolina, which had its three-game winning streak halted. Ward stopped 40-of-43 shots fired his way.