Simplify the following text for a Grade 12 native English-speaking person.
Original: Daniel Patrick Gruen ( born June 26 , 1952 in Thunder Bay , Ontario ) is a retired professional ice hockey ) His career included 49 games in the National Hockey League and 181 games in the World Hockey Association , during which he played with the Colorado Rockies , Detroit Red Wings , Michigan Stags , Winnipeg Jets , Cleveland Crusaders , Calgary Cowboys , and Minnesota Fighting Saints .
Simplified: Daniel Patrick Gruen ( born June 26 , 1952 in Thunder Bay , Ontario ) is a retired professional ice hockey player who played 49 games in the National Hockey League and 181 games in the World Hockey Association . He played with the Colorado Rockies , Detroit Red Wings , Michigan Stags , Winnipeg Jets , Cleveland Crusaders , Calgary Cowboys , and Minnesota Fighting Saints .