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Rangers' traditional support is largely drawn from the Protestant Unionist community, whilst Celtic's traditional support is largely drawn from the Catholic Irish community. The first Old Firm match was won by Celtic and there have been over four hundred matches played to date.

Rangers fans pay tribute to The Queen by singing national anthem before Champions League match against Napoli. Rangers fans have paid tribute to The Queen by singing the national anthem before the Napoli match, despite UEFA rejecting a request by the Scottish club.