"We know how crazy the schedule is and the way it can get," Ottawa defenseman Marc Methot said. "When we have an opportunity with those two days off coming into this game, there was no excuse with regards to winning it."
Theodore stopped Guillaume Latendresse on a penalty shot with 9:11 left in the third period. Brian Campbell was called for hooking Latendresse as the Senators player skated in on goal.
Fleischmann and Phillips both scored power-play goals to leave the score tied at 1 after one period.
"We really have to bear down and give our goalie some support," Panthers coach Kevin Dineen said. "They're creating a lot of chances against us. We had some push-back in the second period and a few opportunities in the third, but we just need a more consistent effort for us to have success."
NOTES: Florida C Stephen Weiss (lower body) did not dress. ... Ottawa concludes its two-game road trip in Florida at Tampa Bay on Friday night. The Senators then have a three-game homestand (Pittsburgh, Washington, Montreal). ... Philadelphia visits Florida on Saturday night. ... The Panthers' only win in their last 12 games against Ottawa came at home on March 4, 2012.