ST. LOUIS - Erik Condra and Alex Chiasson scored third-period goals for the Ottawa Senators, who rallied to tie it and then beat the St. Louis Blues 3-2 in a shootout on Tuesday night.
The Senators, who had lost two straight, three of four and six of eight, trailed by two goals. They were beaten at home by the Blues on Saturday.
The Blues, who lost No. 1 goalie Brian Elliott to a lower-body injury late in the second period, had won two straight and five of seven. They entered having allowed an NHL-best 2.0 goals per game behind the goalie tandem of Elliott and Jake Allen.
The Blues took the lead with 5:37 left in the first period on a long knuckling shot by defenceman Ian Cole that deflected off defenceman Erik Karlsson past goalie Robin Lehner. It was Cole's first of the season.
Alexander Steen scored during a 4-on-3 power-play with 7:55 remaining in the second.