 Cornes has played a vital role under Ken Hinkley in reinventing Port Adelaide and getting the team back into finals in 2013, and helping the Power to their best ever start to an AFL season in 2014, starting 10–1, before eventually losing the 2014 preliminary final to Hawthorn, the eventual premiers, by three points.Cornes' 2015 season was short.He played the first two games of the season before being rested in round three.