Gennaro's WHL career began with the Prince Albert Raiders, who drafted him 41st overall in the 2012 Bantam Draft. He laced up his skates for his first season shortly after, in the fall of 2013.
"It's a year when you're doing everything you can, and what you're being asked of your coaches," Gennaro said of his rookie season, where he scored 15 points in 60 games. "You may have to step out of your comfort zone a bit, but it does help you in the long run…. You're still learning and developing as a player."
At the end of that season, Gennaro played in the Under-17 World Hockey Championship for Canada Pacific. His first look at the international stage saw him score four times, and add three assists in six games, helping his team to a silver medal finish.
In total, Gennaro would play 182 games with the Raiders before he was traded to the Hitmen at the WHL trade deadline in January 2016.
"When it happened it was a bit of a shock. (But) I'm in a position now that I'm on a team that's a great organization, the coaches are awesome, and the teammates are great," said the St. Albert, AB native. "I'm a little bit closer to home too, so the family is happy about that. They get to see me play more often. I think it's worked out well in my career."
It was almost fate, as Gennaro would suit up with Jordy Stallard in Calgary. Only a few months later, Stallard was selected in the fifth round of the 2016 NHL Draft by the Winnipeg Jets.
"From what I remember last year, toward the end of the season and the playoffs, we were on the same line. I was happy for him," Gennaro said. "He's a great guy and a buddy of mine. When he got drafted to Winnipeg, it was pretty cool. We went to training camp together at the start of the year.