Lapierre was assessed a major penalty for checking from behind and a game misconduct in the first period of the Blues' 6-2 home loss. He served the first game of the suspension while awaiting an in-person hearing Friday.
The suspension will cost Lapierre $28,205.
Boyle was knocked out on the play, taken off the ice on a stretcher and spent the night in a hospital. He missed the Sharks' 4-3 shootout loss in Dallas on Thursday night.
That's today's game. That's one of the things you have to deal with when you're a championship team. Guys are going to earn more money based on their performance and what they've achieved, [and] deservedly so. [Saad] falls into that category.
— Blackhawks coach Joel Quenneville on Brandon Saad, who was traded by Chicago to the Columbus Blue Jackets this offseason