The 10 Most Extreme Football Club Rivalries Ollie Irish 7th, September 2010 45 Comments By Ollie Irish Not pure city derbies, but general rivalries (many of which happen to be derbies)… pa-7887951 ◄ Back Next ► Picture 9 of 10 2. Celtic v Rangers (Scotland) - Hundreds of years of intense religious-based hatred condensed into a city derby? Check. For colourful backstory, nothing else comes close to the Old Firm, even if the standard of football isn't what it was