Prendergast has spent 30-plus years in professional hockey front offices, the majority of it with the Oilers. He joined the club in 1990 as vice-president of hockey operations, taking the role of assistant general manager in 2006.
He'll assist Sabres assistant general manager Kevin Devine with amateur and pro scouting.
Prendergast has also worked for Team Canada and NHL Central Scouting, as well as serving as head scout for Hockey Canada's Program of Excellence, which evaluates talent for their national junior and under-18 development teams.
It's an incredible feeling just to see it go in and see the Joe go pretty crazy. Ever since the introduction there, I was kind of feeling the nerves, and to put that one home, I started to feel comfortable and I thought my play started to pick up.
— Nineteen-year-old Red Wings forward Dylan Larkin after scoring a goal in his NHL debut
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