Granato departed from his role as assistant coach with the Blackhawks after that season and served in the same role with the Sabres until being promoted to interim head coach last month. His 26-game stint with Caggiula was enough for him to vouch for the forward after the Sabres claimed Caggiula off waivers from Arizona last week.
"When I've spoken to him it's been easy conversations because we have a prior relationship," Granato said. "... He knows and knew then how much I believed in him when we were together in Chicago and it's no different here. I'm very excited to get him in the lineup and get his game going because he can bring a lot of energy, feistiness, grit and speed."
Caggiula, 26, attended development camp with the Sabres as an invitee in 2014. He went on to win a national championship as a senior at North Dakota and was a coveted undrafted free agent in 2016, when he considered Buffalo before ultimately deciding to join Edmonton.
He joined Arizona prior to this season and tallied seven points (1+6) in 27 games. He felt happy with the chances he generated offensively early on but was unable to translate them to points before a hamstring injury forced him to miss five games in February. He never recaptured his rhythm.
"I was in and out of the lineup every couple of games and that was a little bit difficult for me just to kind of find my footing again and kind of find that rhythm that as a hockey player you're always looking for," Caggiula said.
"… I think when I missed a couple of those chances early on I kind of lost a little bit of confidence and maybe that's something I can work on myself at home or whatever. But overall, I wasn't upset about the way I was playing, it's just one of those things that I could always be better and I always want to be better, doesn't matter how good I was playing."