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Perhaps the worst instance of soil sabotage occurred when the Third Ashes Test at Headingley in 1975 had to be abandoned after supporters of George Davis - a convicted robber whose innocence they maintained - broke into the stadium, dug holes in the pitch and poured oil over one end of the wicket. This slick act of devastation essentially left groundsman George Cawthray over a barrel, and the resulting draw meant England had no chance of winning the four-Test series and thus retaining the sainted urn. Though as futile as it was destructive at the time, the protesters' actions did eventually see their aim achieved: in 2011, after decades of legal wrangling, Davis finally had his conviction overturned on appeal, more than 35 years after being found guilty, a length of time broadly similar to that seen in cricket's own review process when Rod Tucker is third umpire.