Simplify the following text for a Grade 11 native English-speaking person.
Original: Chris Campoli ( born July 9 , 1984 in Mississauga , Ontario ) is a professional Canadian ice hockey player that currently plays for the Chicago Blackhawks of the National Hockey League ( NHL ) as a defencemen .
Simplified: Chris Campoli ( born July 9 , 1984 ) is a Canadian professional ice hockey defenceman who is a member of the Chicago Blackhawks of the National Hockey League ( NHL ) .