Elias and Adam Henrique got the Devils to the overtime, scoring in the final 6 1/2 minutes, with Elias tying the game on a rebound with 66 seconds left in regulation.
Thomas Vanek and rookie Brian Flynn staked Buffalo to a 2-0 lead, with Vanek tallying his team-high 13th goal of the season on a second-period power play, and Flynn getting the first of his career midway through the third period.
Johan Hedberg made 23 saves and stopped both Sabres shootout attempts for New Jersey.
It's a date that's been circled on my calendar, so it's kind of nice to have it here and get it over with (Thursday). This is a little bit of the closing of the book on the move. That's kind of how I'm looking at it.
— Stars forward Jason Spezza on returning to Ottawa for the first time to face the Senators