The teams haven't played each other in over a year, but bodies were flying everywhere during a physical opening period in Game 1 on Monday that ended with the scored tied 1-1.
The Senators got on the board just 1:38 into the game.
With Ducks captain Scott Niedermayer in the penalty box for high-sticking, Mike Fisher took a shot that bounced off goalie J.S. Giguere's glove and went high into the air before trickling over the goal-line.
The goal was originally awarded to Senators forward Mike Comrie, but was later changed to Fisher. It hardly mattered to Ottawa, which was 8-0 in the first three playoff rounds when scoring first.
The Ducks soon battled back to the delight of an enthusiastic sellout crowd at Honda Center. The Anaheim forwards were hitting everything in sight and creating pressure in the offensive zone.
Andy McDonald's sixth goal of the playoffs at 10:55 evened the score at 1-1.
Rookie Andrew Miller, the brother of Buffalo Sabres goalie Ryan Miller, hit Ottawa defenceman Wade Redden to cause a turnover. Teemu Selanne picked up the puck and found McDonald, who beat Ray Emery with a quick shot.
Anaheim continued to press with a good shift from its energy line, but Emery kept them from taking the lead.
Ducks defenceman Ric Jackman was soon penalized for taking Comrie down after the whistle and it was clear the two teams were ready to go despite the long layoff before this series.
Ottawa had eight full days between games since winning the Eastern Conference crown while the Ducks had five full days of rest since taking the Western Conference.