Jeff Skinner also scored for the Hurricanes, who overcame three one-goal deficits. Jiri Tlusty sealed the win by scoring into an empty net with one second remaining.
Sekera also added two assists in facing his former team for the first time since the Sabres traded him to Carolina on June 30.
Goalie Anton Khudobin stopped 26 shots to improve to 9-3 on the season.
Introducing the new official NHL App, available for iPhone, iPad and Android smartphones and tablets. A host of new features and improved functionality are available across all platforms, including a redesigned league-wide scoreboard, expanded news coverage, searchable video highlights, individual team experiences* and more. The new NHL App on your tablet also introduces new offerings such as 60fps video, Multitasking** and Picture-in-Picture.
*Available only for smartphones
** Available only for suported iPads