"We had the puck lots and if we didn't, that was the most we had it in the game," Head Coach Bill Peters said of the tilted third period. "We were looking to make plays and were playing with confidence. ... I thought we were dangerous.
"You can't play with one foot on the gas and one on the brake.
"So, let's take the one off the brake."
Tkachuk certainly did, earning all kinds of praise from the bench boss for how he willed his teammates back into the fight.
"He was excellent," Peters said. "He drug guys into the battle. He was by far our best player tonight right from the drop of the puck. We need more guys on board like that at the start of the game."
The Predators carried the play for the much of the opening 20, with the first 14 shots going the way of the homeside. They opened the scoring on their ninth, after the Flames were unable to clear some heavy traffic at the goalmouth.
Rittich made the initial block on Craig Smith, who rifled a shot from the top of the far circle, but was unable to hang onto the rebound, allowing Nick Bonino to pounce, win a battle in front and sling it home on the backhand.
Bonino, who tallied a natural hat trick in Nashville's 3-0 win over the Chicago Blackhawks Tuesday, now leads the Predators with seven goals on the year.
Nashville opened up a two-goal lead at 10:15, as a bit of a broken play off the rush put the Flames in a deep hole. The initial blast by Sissons was blocked by Noah Hanifin, but the stray puck bounced right to Watson, who worked the give-and-go with Sissons, and finished it off with a rocket from the hash marks.
The goal came only seconds after Ryan Johansen was foiled on a partial breakaway, losing his footing in tight but still getting a shot off while being hounded from behind.
The Flames, to their credit, evened things out near the end of the period and outshot the Preds 4-1 in the final five minutes.
One of those four pucks eluded Preds goalie Pekka Rinne, as Ryan cleaned up a wraparound try from Tkachuk, making it a one-goal game at 15:27.
Rinne, meanwhile, had his shutout streak snapped at 151:28.