In a notable incident of football rivalry, the managers of Rangers and Celtic, Neil Lennon and Ally McCoist, found themselves embroiled in a fierce confrontation during a Scottish Cup replay match in March 2011. This intense Old Firm clash not only ended with Celtic winning 1-0 but also showcased the severe tensions that often accompany these encounters. The match saw Rangers receive three red cards, underlining the high stakes and emotions surrounding the event.

The aftermath of the game was marked by even more drama, as Lennon and McCoist clashed on the touchline, requiring intervention to prevent a full-scale brawl. Both men, representing two of the most storied clubs in Scottish football, have a long history intertwined with their respective teams, adding layers to their rivalry. The incident sparked discussions about the aggressive atmosphere often present in Old Firm matches and the responsibilities of club officials to maintain decorum.

Following the altercation, both managers received touchline bans as a sanction for their conduct. This decision highlighted the football authorities' stance on maintaining sportsmanship and controlling the competitive spirit that can lead to violence. The incident remains a significant moment in the history of Scottish football, serving as a reminder of the intensity of the rivalry and its potential consequences not just for players but for coaching staff as well.