Kostin (upper body) isn't expected to play Saturday versus Utah, according to Curtis Pashelka of The San Jose Mercury News.
Kostin left Thursday's game due to the injury. He has a goal, four points, 25 PIM and 63 hits in 20 appearances in 2024-25. Kostin's exit from the lineup coincides with Will Smith returning from an upper-body injury. They might have shared the ice on the third line if they were both healthy.