Kastelic (undisclosed) was placed on injured reserve Tuesday.

Kastelic notched an assist, four hits, two blocked shots and five PIM in Saturday's 6-5 shootout loss to the Senators.

Kastelic (upper body) was activated from injured reserve Saturday and will be in the lineup versus Ottawa.

Kastelic (upper body) was placed on injured reserve Tuesday.

Kastelic (upper body) won't play against Tampa Bay on Tuesday, according to Andrew Fantucchio of Boston Hockey Now.

Kastelic (undisclosed) won't play Saturday against Florida, Fluto Shinzawa of The Athletic reports.

Kastelic registered an assist and four hits in Sunday's 5-4 overtime loss to the Islanders.

Kastelic signed a three-year, $4.701 million contract extension with the Bruins on Friday.

Kastelic found the back of the net on four shots and added two hits and a minus-1 rating in 8:48 of ice time in Thursday's 3-2 overtime loss to the Oilers.

Kastelic (lower body) is set to play Thursday against Utah.