Just think of the fiercest derby games in world football and the likes of Rangers v Celtic, Spurs v Arsenal and Barcelona v Real Madrid readily spring to mind but a match between two Belfast clubs doesn't automatically figure in the thoughts of too many fans around the globe.
However, the clash between Linfield and Glentoran, whose rivalry has been recharged lately with the row over the outcome of the 2019-20 season, has made it into the top 50 of the biggest derbies on the planet with a national magazine putting the Big Two fixture at No.35 on their list.
But while the FourFourTwo writers can easily explain the animosity between many supporters across Europe and South America, they struggle to make clear the reasons for the bad blood between the two sides in Belfast.
Indeed, they express surprise bordering on incredulity that the enmity has nothing to do with the city's deep-rooted religious and political tensions.
The authors acknowledge that the supporters of both clubs are overwhelmingly Protestant so "this isn't simply a sectarian clash", according to FourFourTwo.
The magazine does claim that some games between the Blues and the Glens have been marred by religious bigotry among some supporters but it doesn't cite any examples.
It goes on: "Both sides are predominantly Protestant-supported, and despite accusations that Linfield secretly banned Catholics, each side has fielded players from various religious backgrounds."
The magazine suggests that the friction between the clubs is more about success than anything else, with Linfield having won many more league titles.
It also says that another factor is geography "with Linfield in Country Antrim to the south of Belfast and Glentoran in County Down to the east".
It adds: "Competing since 1887, they traditionally meet on Boxing Day - unless the league bans it for fear of violence."
The latter statement, however, isn't rooted in reality as no one in football here can remember any Big Two festive match being called off in such a manner.
That's not to say, of course, that the Belfast derby games, dubbed the 'Bel Clasico' by the media, have been trouble-free down the years. Far from it.
At one game at The Oval, Radio Ulster commentators had to plead over the airwaves for the police to come into the ground to deal with trouble-makers on the pitch.
There have also been vicious clashes at Windsor Park, though in recent years segregation and severe restrictions on the size of crowds have reduced the potential for disturbances.
However, even the most cursory browse through YouTube reveals X-certificate violence that has also 'earned' the derby a whole chapter in a book called Fear and Loathing in World Football.
In recent years the north Belfast games between increasingly successful Cliftonville and Crusaders teams have left their fans arguing that they are the real Big Two in Belfast.
Reds supporters are largely from the Catholic/Nationalist community and the Crues' fan base is mainly Protestant/Unionist but the two clubs have been working together on cross-community projects.
What were always keenly contested games between Glenavon and Portadown haven't happened as regularly as the Shamrock Park side have been in the Championship.
But supporters are looking forward to those once more as Portadown have been promoted.
Like the derby game between North Lanarkshire rivals Albion Rovers and Airdrie, the mid-Ulster derby has also been dubbed 'El Buckfastico' because of the reputed fondness in the area for a drink of that name.
It is at least a more colourful title than the clash between Ballymena United and Coleraine which is blandly dubbed the 'A26 derby' after the road that connects the two towns.
More imaginative is the moniker attached to games between Newry City and Warrenpoint Town in south Down - the 'Mourne Ultimatum'.
In their time in the Irish League, Derry City's nearest rivals were Coleraine but it was their games against Linfield that enjoyed the biggest attendances and sparked trouble on the terraces. Nowadays in the League of Ireland, Derry's greatest rivals are Finn Harps across the border in Ballybofey in County Donegal.
It's a rare cross-border game on the FourFourTwo table which makes for fascinating and illuminating reading because many of the derbies will probably be mysteries to most fans who mightn't be well-versed in the ways of Egyptian, Iranian, South Korean, Peruvian, Paraguayan and Indian football.
FourFourTwo says that the Cairo derby between Al Ahly and Zamaleck is where football meets history and politics "and is a wholly embraced excuse for Egypt to go mad for a bit".
Which is something of an understatement. After a riot in the 1970s, the rest of the season had to be called off. There have also been reports of deaths and serious injuries during and after the games where security is in the hands of the army.
But the magazine also highlights a string of other games where temperatures rise, like the tempestuous derby in the Bolivian city of Santa Cruz between Blooming and Oriente Petrolero where a player celebrating a goal with a 'chicken dance' once sparked ferocious rioting.
Though Argentina's match between Boca Juniors and River Plate is named as the world's biggest derby, another game from the country's third biggest city Rosario can also be a feisty affair according to FourFourTwo but the teams are as famous for their 'celebrity' fans as for their football.
Newell's Old Boys, named after an Englishman, were Lionel Messi's old side and he still supports them while Rosario Central counted Che Guevara as one of their fans before he went to Cuba to join the revolution.
But if you're looking for passion of a different kind in a derby, the game between Bahia and Vitoria in the Brazilian coastal city of Salvador is hard to beat.
A Vitoria star who was once sent off for boasting to an opponent that he'd slept with his wife was later confronted at his home by the gun-toting Bahia defender, who wanted an assurance that his missus hadn't been playing away.
Another match was abandoned after Bahia had five players sent off in a brutal encounter against Vitoria that pre-match had been dubbed the 'derby of peace'.
The FourFourTwo writers say many of the rivalries in world football stem from political power struggles while others are rooted in old class divisions.
One example of that is the Iran derby between Esteghal and Persepolis, who slug it out in front of 95,000 fans in a shared stadium. Esteghal are the team of Tehran's 'elite' with Persepolis regarded as the 'people's' club.
In Morocco, Rafa and Wydad from Casablanca also play at the same 65,000-capacity ground and their derbies pack it. Rafa are regarded as the team of the people and Wydad are seen as the establishment club. In 2007, a fan was killed during a match and three years later 100 supporters were arrested after a post-match riot.
In South Africa, it's estimated that 30 million people follow Soweto's top clubs the Kaizer Chiefs - whose name has been adopted by an English pop group - and the Orlando Pirates, who took their title from an Errol Flynn film
But few games attract bigger crowds than Brazil's derby between Flamengo and Fluminese, who created a world record for a club fixture in the 1960s by jamming 194,000 fans into Rio's iconic Maracana stadium, while on the other side of the world the game in Kolkata in India between Mohun Bagan and East Bengal was watched by 131,000 supporters in 1997.
What makes the so-called 'Derby of the Eternal Enemies' in Greece between Olympiakos and Panathinaikos stand out is that no away fans are allowed in but FourFourTwo says that there are "still plenty of riot police, fireworks and tear gas".
The magazine's Top 50 includes other well-known derbies like the ones between AC Milan and Inter Milan in Italy, Marseille and Paris St Germain in France, Borussia Dortmund and Schalke in Germany and Real Madrid v Barcelona in Spain along with Galatasaray and Fenerbahce, whose former manager Graeme Souness triggered a riot after he planted his club's flag in the opposition's pitch during an away game in 1996.
Souness, of course, experienced the red-hot atmosphere of two British derby games in his time with Rangers against Celtic and with Liverpool against Manchester United, matches which feature at No.3 and No.7 respectively on the FourFourTwo top 50.
The other British derbies to figure are Spurs v Arsenal at No.20 and Portsmouth and Southampton at No.14, while the Sheffield United v Sheffield Wednesday scrapes in at 50.
But by far the most bizarre English derby included is the Newcastle v Sunderland game which ranks at No.24.
The magazine traces the hostility all the way back to pre-football times at the Jacobite rebellion of 1745 which was supported by people in Sunderland and opposed by loyalists in Newcastle.
FourFourTwo says: "The footballing rivalry has veered from the banal to the barbaric. Some fans boycott bacon because it's red and white or Sugar Puffs because Kevin Keegan advertised it, while others make the mutual hatred known more viscerally - and not just by the infamous 2013 punching of a police horse."