At the start of the 2009 season, Geelong won the AFL Pre-Season Premiership defeating Collingwood by 76 points. Chapman played 20 games for the season and kicked 31 goals for the year, Chapman also had a career high 41 disposals in round 6 and a career high 6 goals in round 18. Chapman went on to poll 12 votes in the Brownlow Medal, and made the All-Australian team for the first time. Geelong finished 2nd on the ladder and Chapman had a dominant finals series kicking 5 goals in the Preliminary final and 3 goals in the grand final. Geelong defeated the by 12 points in the 2009 AFL Grand Final, Chapman kicked the winning goal, and was also the winner of the Norm Smith Medal.