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.
The old saying in hockey is 'weather the storm.' I put the notion in their heads that we don't want to weather the storm, we want to push just as hard and matched their work ethic. I thought our guys exceeded that in the first period.
— Edmonton Oilers coach Dallas Eakins after their loss to the Nashville Predators on Thursday