Playing mainly as a small forward, Davis was selected in the All-Australian team in 2009, having won the Goal of the Year award the previous season.
Davis won regular selection at Collingwood early in his career, playing almost forty games in his first two seasons.
In 2008, Davis came 4th in the Copeland Trophy, Collingwood's best and fairest award, and represented the Dream Team in the AFL Hall of Fame Tribute Match.
Davis also won the AFL's Goal of the Year for a solo effort in Round 22 against Fremantle: he tackled and dispossessed Des Headland on the half-forward flank, paddled and gathered the ball near the boundary line, ran inside 50 on the boundary line, and hit a low and hard kick from a tight angle for a goal.
He was very successful in this role, and he received his second career selection in the All-Australian team and a fifth placing in the Copeland Trophy.
Davis has not confirmed the exact reason for his departure, but it is known that he was offered a 30% pay cut at the end of 2011, despite his All-Australian season, and it is known that he had previously expressed a desire to return with his family to Perth.
He nominated for the draft but was not selected,[8] and went on to sign a two-year contract to play for his former WAFL side, Perth, in 2012 and 2013.