Simplify the following text for a Grade 7 native English-speaking person.
Original: However , after being responsible for a car accident in September 2003 that killed teammate and close friend Dan Snyder , he requested a trade and was subsequently dealt to the Ottawa Senators .
Simplified: In 2005 Heatley asked to be traded because of his involvement in a car accident that killed teammate Dan Snyder . He was traded to Ottawa Senators .