Besiktas' trip to Kasimpasa on Sunday saw one of the more shocking incidents you are likely to come across this season.
The hosts had come back from a goal down to lead 2-1 and were holding on as Besiktas looked for an equaliser when a fan ran onto the pitch and took out midfielder Manuel Fernandes in the middle of an attacking move.
Nearby Kasimpasa players quickly wrestled the man to the ground and called for security, but Besiktas stars Hugo Almeida and Ramon pushed through the throng of bodies to stamp on the fan.
Both were sent off and the man was carried away by stewards to end a shocking and bizarre episode.
Watch the incident above...
(Thanks to 101GreatGoals for bringing this to our attention)