Simplify the following text for a Grade 6 native English-speaking person.
Original: Hamlin also ran his first Nextel Cup Series races in 2005 , making his Cup debut at Kansas Speedway as driver of the # 11 FedEx Chevrolet for the 2006 season , after Jason Leffler was released , and made seven starts in in the Cup series in 2005 .
Simplified: Hamlin also raced in his first Nextel Cup Series races in 2005 , making his Cup first start at Kansas Speedway as driver of the # 11 FedEx Chevrolet . He made seven starts in in the Sprint Cup series in 2005 .