Thornton has played all of his six seasons for Boston. He was drafted first overall in the 1997 Entry draft for Boston. His best season was 2002-03 when he had 101 points.
Achievements 1996- OHL All-Rookie Team 1996- OHL Rookie of the Year 1996- Canadian Major Junior Rookie of the Year 1997- OHL Second All-Star Team 2002- Played in NHL All-Star Game 2003- NHL Second All-Star Team 2003- Played in NHL All-Star Game
