Following a faceoff win in the offensive zone, Namestnikov lit the lamp again when he pounced on a rebound and tucked the puck around Bobrovsky to extend Winnipeg's lead to 4-2 at 12:59.
Returning from the second intermission with a collective head full of steam, the Panthers struck just 33 seconds into the third period when Marc Staal took a pass from his brother Eric and fired a shot from the slot that clipped off Hellebuyck's glove and floated into the twine to make it 4-3.
"We were kind of trailing all game long," Staal said. "I thought we did a good job in the second regrouping and coming after it. It's a big point. It's tough losing in overtime, but three out of four on a tough weekend, we've got to take the positives because we've got to keep on winning."
On a 4-on-3 power play, the Panthers pulled even when Tkachuk followed up on a shot from Barkov and cashed in on the rebound to make it 4-4 with this third point of the game at 6:24.
In overtime, the Panthers generated some quality looks and nearly cashed in on an open net, but in the end it was Scheifele roofing his own rebound into the top of the cage that gave the 5-4 win to Winnipeg at 4:31.
Playing very well in defeat, Florida finished with 5.48-2.71 lead in expected goals.
"We're very deep," Tkachuk said when asked about the team's confidence. "When we have everybody contributing and everybody playing the same way and being predictable and working together, you can see like in the second half of that game what we can do it."