Simplify the following text for a Grade 7 native English-speaking person.
Original: When Bayne was 15 years old , he moved to the USAR Hooters Pro Cup Series Southern Division , in which he received the highest rookie honors .
Simplified: In 2006 , Bayne raced for Team Rensi in the USAR Pro Hooters Cup , and he won the Rookie of the Year award at age of 15 .