Richmond's Jack Riewoldt will win his second Coleman Medal as the AFL's leading goal-scorer, wrapping up the award in Sunday's clash with Port Adelaide at the MCG.

Riewoldt started the game three goals behind joint leaders, Fremantle's Matthew Pavlich and Geelong's Tom Hawkins, who both finished the home and away season with 62.

Riewoldt posted his fourth major of the day late in the third quarter, to move to 63 goals and ensure he will win the medal outright.

He also won the Coleman in 2010.