He's right.
At 5-on-5, the Panthers led the Senators in shot attempts (49-25), shots on goal (28-14), scoring chances (19-10), high-danger shot attempts (10-2) and goals (2-1), per NaturalStatTrick.com.
But on the power play, Ottawa went 3-for-4, while Florida went 0-for-4.
"I thought we were pretty good for most of the night," Tkachuk said. "We just got into some penalty trouble. They capitalized on their power plays, and we didn't on ours. They definitely crushed us in the whole special teams battle tonight."
Opening the scoring for the Senators, Brady Tkachuk teed up a pass from Thomas Chabot and blasted a one-timer into the twine from the right circle to make it 1-0 at 9:02 of the first period.
Making back-to-back exceptional saves in rapid succession, Sergei Bobrovsky helped keep the Senators from striking again soon after when he denied Alex DeBrincat on a breakaway before sprawling out to rob Shane Pinto on the ensuing rebound with a glorious glove save.
On the power play, the Senators doubled their lead when, after Eric Staal's stick was broken and Gustav Forsling had taken a puck up high, Erik Brannstrom took advantage of the chaos and fired a shot past Bobrovsky from near the bottom of the right circle to make it 2-0 at 18:55.
In the second period, Forsling got the Panthers on the board when he one-timed a pass off the boards from Sam Reinhart through traffic and past Mads Sogaard to make it 2-1 at 5:58. Getting that goal back for Ottawa later on, DeBrincat scored on the power play to make it 3-1 at 19:22.
Finding the back of the net for a second time, Forsling, who has taken another step forward this season, cut into Florida's deficit when he dropped to one knee and unloaded a one-timer from the point that sailed past Sogaard and into the cage to make it 3-2 at 9:15 of the third period.