[2] He ended the year by winning the Eagles' best and fairest award, the John Worsfold Medal, beating Brownlow Medallist Matt Priddis by 11 votes.
[3] He missed the entire 2015 AFL season after tearing his anterior cruciate ligament in West Coast's first pre-season game of the year against Carlton.
[4] In the final minutes of the 2017 Elimination Final played against Port Adelaide Power, with scores level, Mackenzie kept Port Adelaide from scoring a behind, throwing the full force of his body into the point post in the process.
[5] This helped force the Elimination Final into extra time, where the Eagles emerged victorious.
Mackenzie retired at the end of the 2018 season, after consistent troubles with injury.