Hull City are something of an outlier when it comes to English football rivalries.
The Tigers do not have one universally accepted enemy, with geography, league history and supporters' perceptions all pulling in different directions.
There is an obvious Humber connection with Grimsby Town and Scunthorpe United, while Leeds United are arguably a bigger opponent in the eyes of many Hull supporters despite the clubs being separated by more than 50 miles. Sheffield United and York City also have their own claims, although neither rivalry carries quite the same consistency.
So, who are actually Hull City's biggest rivals? FootballGroundGuide takes a look at the five fiercest football rivalries involving the Tigers below.
Leeds United
Leeds United are perhaps the most significant rivalry for Hull despite not being their closest geographical opponents.
The clubs have a long history of meetings dating back to the early days of English football, and Hull supporters have traditionally viewed Leeds as a more important enemy than either of their Humber rivals.
The difference in size and stature between the clubs has also added an interesting dynamic, with Leeds often representing one of the biggest sides Hull regularly encounter. Whenever the teams share a division, the fixture carries plenty of local and regional bragging rights.
It is a rivalry that could become even more significant with regular meetings, particularly given the passionate support both clubs can generate.
Leeds may have bigger historical enemies of their own, but for Hull, this is one opponent whose visit is always likely to attract extra attention.
Grimsby Town
Grimsby Town are one half of Hull's traditional Humber rivalry and have been meeting the Tigers since 1905.
The Mariners were already established Football League members when Hull joined the competition, giving their early encounters added significance.
The geographical connection is obvious, with the two clubs separated by the Humber, and the fixture has historically been one of Hull's most important regional contests. Grimsby won the first league meeting 1-0 in December 1905, but the balance of power has changed considerably as Hull have climbed through the divisions.
The problem for the rivalry is simply frequency. Hull have spent much of the modern era in the Championship and Premier League, while Grimsby have spent considerable periods lower down the pyramid.
That has taken some of the heat out of the Humber derby, but the regional bragging rights remain.
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Scunthorpe United
Scunthorpe United complete Hull's traditional Humber rivalry picture.
The clubs are separated by the Humber region and have faced one another regularly throughout their histories, particularly when both were operating in the lower divisions of the Football League.
Unlike the rivalry with Leeds, this one is driven almost entirely by geography and regional identity. Matches have often provided an opportunity for supporters to establish which club should be regarded as the area's leading force, making them especially important when both teams are competing at a similar level.
Scunthorpe's decline through the divisions has reduced the number of meetings considerably, meaning the rivalry is no longer a regular fixture.
Nevertheless, whenever the clubs are reunited, the Humber connection ensures there is plenty of added significance.
Sheffield United
Sheffield United are another opponent with whom Hull have built up a considerable history.
The clubs have met more than 50 times in competitive football, and their shared history has included plenty of battles across the second tier and top flight.
There is a particularly strong historical reason for some older Hull supporters to regard the Blades as rivals. During the 1983-84 season, the clubs finished level on points and goal difference in a promotion race, with Sheffield United going up after scoring more goals than Hull.
That narrow outcome left a lasting impression and helped turn what might otherwise have been a straightforward regional fixture into something more personal for sections of the Tigers support.
Sheffield United may not be Hull's defining enemy, but the history gives this rivalry genuine substance.
York City
York City are another nearby club with a historical rivalry involving Hull, although it has become less prominent over time.
The two clubs have regularly crossed paths lower down the English football pyramid, where regional fixtures carried considerably more weight than they might today.
The geographical proximity between Hull and York gives the meetings a natural local edge, while both clubs have traditionally drawn support from surrounding areas. That can make the fixture particularly important for supporters keen to establish local footballing supremacy.
Hull's rise into the Premier League and sustained presence in the Championship reduced the regularity of the fixture, while York have spent long periods outside the Football League.
A resurgence from the Minstermen could therefore give this old rivalry another lease of life, although it remains some way behind Hull's more established rivalries.