Simplify the following text for a Grade 8 native English-speaking person.
Original: He formerly played for the Philadelphia Flyers and the Ottawa Senators of the National Hockey League ( NHL ) and Atlant Moscow of the Kontinental Hockey League ( KHL ) .
Simplified: He plays for the Kontinental Hockey League ( KHL ) . Before joining the KHL , Emery played for the Ottawa Senators of the National Hockey League ( NHL ) .