Chad Studley Cornes (born 12 November 1979) is a former professional Australian rules footballer who played for the Port Adelaide Football Club and Greater Western Sydney Giants in the Australian Football League (AFL). He was a member of the Port Adelaide side which won the premiership in 2004. On 3 July 2013, he retired from AFL football due to a troublesome knee. Cornes is currently serving as a forward development coach for the Port Adelaide Football Club. Playing career Port Adelaide career (1999–2011) Early career (1999–2003) Cornes began his AFL career as a key-forward and after playing only 6 games in 1999, was a regular in the Power forward line in 2000, booting 22 goals. Between 2000 and 2003 Cornes and Tredrea formed one of the best forward partnerships in the AFL, with Chad playing up the ground demonstrating his great contested marking ability. Despite being one of the best forwards in the game, Cornes was moved into defence at the start of the 2004 season. Career change (2004–2005) In 2004, Cornes was moved to centre-half back. The new position worked wonders as Cornes began to single-handedly dominate games, earning himself his first All-Australian award, and finishing third in the Brownlow medal. The move to centre-half back was a key reason for Port Adelaide's dominance, which culminated in their first Premiership in 2004, defeating the Brisbane Lions by 40 points. He had a key defensive role on Brisbane Lions' forward Jonathan Brown during the Grand Final, restricting him to just one behind for the match. After Port Adelaide's dominance in 2004, Cornes was again used as a key defender to great effect. However, Port Adelaide was unable to repeat its finals' glory of 2004, being eliminated by cross town rivals Adelaide in the first semi-final. Leadership (2006–2007) The 2006 was a disappointing one for Port Adelaide, and one which frustrated Cornes in particular. The season never really took off, and with Cornes now being a senior player, he was moved into the midfield to help the younger players. This move paid off as he dominated matches, which was a huge positive for the Power in an otherwise disappointing campaign. Cornes won the Showdown Medal in round 21. In 2007, Cornes was a key midfielder and has a largely impressive season. Cornes finished the 2007 season with 643 disposals, and led the competition in kicks, and went into the Brownlow medal