Days before the game, Heerenveen and Groningen fans tease each other by means of playful actions, usually with no violence. Heerenveen fans once stole the centre spot from the Oosterpark stadium, and raised the Frisian flag at the Martinitoren, the highest tower in Groningen, combined with a banner saying ""SCH op eenzame hoogte" (SCH on lonely height)". The front yard of a Groningen chairman once got filled with rubble from a construction site. This was because the construction of the Euroborg had to be halted due to a major design mistake. Groningen fans countered by painting a statue of all-time Heerenveen hero Abe Lenstra green and white, the colours of Groningen. They also transformed a viaduct near Heerenveen to green and white.