Miller was pinching inside the Washington zone when the puck hopped over his stick. He turned back to play the puck when Ovechkin hit him in the numbers.
The hit drew the ire of Bruins forward Brad Marchand, and a scrum ensued while Miller remained on the ice.
The 28-year-old eventually picked himself up and made his way to the Bruins locker room, clutching his right shoulder/collarbone area.
Just got word from an NHL official D Kevan Miller is already at a local area hospital. Same surgically repaired shoulder from a year ago.
— Courtney Fallon (@CourtneyFallon_) March 6, 2016
Early word on Kevan Miller isn't good. Sounds like his shoulder & neck are pretty banged up after the Ovechkin hit from behind
— Joe Haggerty (@HackswithHaggs) March 6, 2016
Ovechkin, while not ejected, received a five-minute major for boarding.
The Russian star has been suspended three times in his NHL career, though only one of those was for hitting someone from behind.