Peca, now an assistant on Seth Appert's coaching staff in Rochester, worked closely with Peterka during his first North American season in 2021-22. He watched the 20-year-old turn in an impressive training camp, then struggle to score out of the gate before developing into one of the best rookies in the AHL.
Peterka finished with 68 points (28+40) in 70 games during the regular season, earning a place on the AHL's All-Rookie team. He tied for the team lead with 12 points during a dynamic playoff run.
Now, he is attending his first pro development camp with his sights set on making the Buffalo roster in the fall alongside fellow standout Jack Quinn.
"It's a long summer still and we'll work out as hard as we can to make the roster," Peterka said.
Peterka threatened to make the Sabres roster as a teenager last September, impressing with his eye-catching speed and skill while scoring three goals in five preseason games.
The organization opted to practice patience with both Peterka and Quinn, sending them to Rochester with the mission of developing their all-around games. It was a challenge for Peterka, who had just four goals in 23 games before Christmas.
When the offense lacked, Peca and his fellow coaches showed Peterka film of all the ways he positively affected the game outside of the score sheet. Those examples became habits as the year progressed.
"He's incredibly fast, powerful, instinctual," Peca said. "He became one of our best penalty killers by the end of the season. I think at the start of the season, we never expected him to ever be able to kill penalties. But that's how far he grew in his understanding of how impactful he can be without the puck and without scoring."
Added Peterka: "I didn't know that either, that I would be a penalty killer at the end of the season."