Simplify the following text for a Grade 11 native English-speaking person.
Original: Olaf KÃ lzig ( born April 6 , 1970 ) is a retired German professional ice hockey goaltender who played 14 seasons in the National Hockey League ( NHL ) for the Washington Capitals and the Tampa Bay Lightning .
Simplified: Olaf KÃ lzig ( born April 6 , 1970 ) is a Retired German professional ice hockey goaltender , that played for the Washington Capitals of the National Hockey League .