Kastelic scored two goals on three shots along with three blocks and three hits in Thursday's 6-4 win over Montreal.
Kastelic and his fourth-line mates -- Cole Koepke and John Beecher -- accounted for half of Boston's scoring output. He's on the team to do what fourth liners do, and Kastelic is not bashful when it comes to being gritty. He has nine hits and a five-minute major through his first two games in a Boston uniform.