He pried the top job from Night 1 starter Mike Smith with a white-hot fall, but was nursing a knee injury in the back half of the campaign, allowing Smith to re-assume the No. 1 role in time for the playoffs.
Rittich, though, is back healthy - and hungry - now after serving as the backup down the stretch and into the spring dance, even declining an invite to tend goal for the Czech Republic at the IIHF World Hockey Championship to properly mend his troubled hinge.
"I feel great on the ice, I feel great in the gym," Rittich said. "Everything's perfect.
"Even dealing with that injury, last year - all the good times and the bad - was big for me.
"But it can always be better, and that's been my focus here during the off-season.
"Going into this year, I know I have a pretty good chance of being the No. 1 goalie. That's a big deal. A lot of pressure, maybe. But last year taught me so much about myself and now, I've never been more ready to show what I'm capable of."
The Flames feel the same.
"If you were to chart his development path, you'd get a straight line, due north, ever since he arrived in our organization," said general manager Brad Treliving. "We believe in David. We've seen what he's capable of already, and the fact that he hasn't even hit his full potential yet speaks to the kind of athlete we're dealing with.
"Is he entering a bit of new territory this year, with the so-called starter's role up for the grabs? Yes, you could definitely make that argument.
"But we don't want him to change anything or to put any extra pressure on himself.
"We want David to be David."