sentences:  Playing at centre-halfback, the "impassable" and "unbeatable" Duncan dominated the game as, perhaps, no other player has done before or since.According to "The Age", "Duncan's meteoric marking and wonderfully dashing defence was the most sparkling individual performance of the season".According to "The Argus", "Duncan his played many fine games for Carlton, and has also been a tower of strength in interstate teams, but he has never been seen to better advantage.