The AFL needs umpires. Independent arbitrators between ultra-competitive football clubs that uphold and enforce the rules that govern the code. Important as they may be, and forgive me for stating the bleeding obvious, they don't always get it right.

And players don't always respond well when such mis-steps occur.

Here's a stroll down memory lane - a look at five unforgettable run-ins between a player and an officiator.

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1. 'Diesel', part 2

Perhaps venting some of the frustration Russo engendered, Greg Williams was banned for nine matches in 1997 for shoving umpire Andrew Coates in a fiery encounter with traditional rival Essendon.

Bomber Sean Denham, after the final siren, incensed Williams with foul language and the classic "look at the scoreboard" sledging tactic. 

Sensationally, Coates decided against reporting Williams, and felt a suspension should not be forthcoming, offering the following recount of the dispute in a letter to the general manager of football operations at the AFL at the time. 

“Whilst trying to persuade Williams not to pursue the matter ... Williams told me to 'go away' and simultaneously pushed me in the chest.

“I believe that this was a reflex action and one that was a result of sheer frustration and anger directed at ... Denham.

“Whilst his actions could be construed as interfering with an umpire, at no time did I feel threatened nor, given the above circumstances, that I was interfered with to an extent that would warrant such a serious charge and accordingly no report has been made."

The AFL, irrespective of Coates' submissions, banned Williams for nine matches - a sanction unprecedented at the time.

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