Bryzgalov injured in Oilers' win
Dubnyk stopped two of three shots in the tiebreaker. Dallas' Kari Lehtonen failed to make a save in the shootout.
Ryan Garbutt nearly had a hat trick, but he was stopped on a breakaway attempt by Bryzgalov with 3 minutes, 41 seconds left in the second. Garbutt collided with Bryzgalov, who left with an upper-body injury and didn't return.
Bryzgalov, who made 28 saves, trailed by 1-0 when he came out.
Alfredsson, the former longtime captain of the Senators, wasn't primarily responsible for Ottawa's second straight loss and fourth consecutive at home, but he helped contribute to the continuation of his ex-team's woes.
Ryan Kesler scored two goals to lead the visiting Vancouver Canucks to a 3-2 win over the Carolina Hurricanes.
Backup goalie Eddie Lack made 29 saves to help Vancouver pick up its third win in its last 11 games. - AP