IJsselderby

The IJsselderby is a football derby between the Dutch clubs Go Ahead Eagles from Deventer, and PEC Zwolle from Zwolle.
Supporters often call Go Ahead Eagles ‘Kowet’ and PEC Zwolle simply ‘PEC’.
The rivalry between the clubs started when they competed in the Eerste Divisie in the 1990s. Until the 1990s, Go Ahead Eagles played in the Eredivisie most of the time and is the more successful of both clubs winning the national championship in 1917, 1922, 1930 and 1933. PEC Zwolle later gained success, winning the KNVB Cup in 2013–14, and the Johan Cruyff Shield in 2014. Go Ahead Eagles won the 2024-25 KNVB Cup.
Deventer and Zwolle are both situated along the river IJssel. The distance between the two cities is about 28 kilometers. Go Ahead Eagles supporters call their rivals ‘Olle’, as Zwolle sounds too disgusting for them and Zwolle fans call their rivals ‘Egels’. There have been several fights between the supporters of the two clubs. It is known as one of the fiercest derbies in the Netherlands, along with Feyenoord – Ajax, NEC – Vitesse and SC Heerenveen – SC Cambuur.