Brighton & Hove Albion may have only recently established themselves as a Premier League regular, but the Seagulls have built up a number of rivalries throughout their history.
Geography has naturally played a major role, with Brighton's position on the south coast putting them in close proximity to several other clubs.
The rivalry with Crystal Palace stands comfortably above the rest, despite the two clubs being nearly 40 miles apart. Southampton and Portsmouth provide two more traditional south coast fixtures, while Brentford have developed into an increasingly interesting modern sporting rivalry and Lewes offer the local connection.
FootballGroundGuide takes a look at the five fiercest football rivalries involving the Seagulls.
Crystal Palace
Crystal Palace are without question Brighton's biggest rivals.
It is an unusual derby in geographical terms, with Selhurst Park around 40 miles from the Amex, but decades of genuine hostility have turned the fixture into one of the Premier League's most recognisable rivalries.
The rivalry began to intensify in the 1970s, when Alan Mullery took charge of Brighton, and Terry Venables became Palace manager. The two young managers quickly developed a fierce dislike for one another, while both clubs were competing for promotion from the Third Division. Brighton and Palace then battled for the Second Division title the following season, with Palace eventually finishing one point ahead.
The presence of the A23 road between Brighton and Croydon has seen the media label the fixture the A23 or M23 derby, although supporters themselves do not generally use those names.
What matters is the animosity, with the rivalry now firmly established as Brighton's biggest.
Southampton
Southampton are another long-standing south coast rival, with the two clubs sharing a geographical connection and a history of important meetings dating back to the early days of league football.
The distance between the two cities makes this a more natural regional rivalry than Brighton vs Palace.
The fixture has frequently carried significance because the clubs have often found themselves fighting for promotion or trying to avoid relegation at similar points in their histories. That competitive overlap has helped turn what could otherwise be a routine meeting between two south coast clubs into a fixture with genuine needle.
One of the most memorable encounters came in the 1986 FA Cup quarter-final, when Southampton travelled to Brighton and beat them as the Seagulls enjoyed one of the biggest seasons in their history.
The rivalry does not match the hostility of Palace, but there is plenty of history behind Brighton vs Southampton.
Portsmouth
Portsmouth provide Brighton with another traditional south coast rivalry.
The clubs are separated by around 50 miles, but their shared regional identity and long history of competition have helped make this an important fixture for supporters of both clubs.
The rivalry became particularly significant during periods when Brighton and Portsmouth were battling through the divisions, with promotion contests and league meetings giving supporters regular opportunities to claim bragging rights. The atmosphere can be especially strong when both teams are operating at a similar level.
It may not have the constant intensity of Brighton vs Palace, but Portsmouth remain one of the Seagulls' most established regional opponents.
The South Coast Derby label gives the fixture an obvious sense of occasion whenever the clubs meet.
Brentford
Brentford are a much more modern rival for Brighton, with the relationship built around the similarities between the two clubs and their respective approaches to recruitment and squad building.
Both have developed reputations for operating intelligently in the transfer market and competing above their financial weight.
There is also a personal element behind the rivalry. Brighton owner Tony Bloom and Brentford owner Matthew Benham have a long-standing history dating back to their involvement in betting, with reports suggesting the pair have not spoken since 2004 after a dispute.
The clubs' rise into the Premier League around the same period has given the rivalry much greater exposure.
Meetings have regularly been competitive, while the comparison between two clubs often described as “Moneyball” operators has added an intriguing off-field subplot.
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Lewes
Lewes are Brighton's most local opponent on this list, with the clubs both based in East Sussex and separated by only a relatively short distance.
Unlike the Seagulls' larger rivalries, this one is largely driven by regional pride and the desire to establish local supremacy.
The two clubs have met regularly throughout their histories, particularly in lower-level and regional competitions. That familiarity has helped create a genuine community feel around the fixture, with supporters on both sides seeing the match as an opportunity to represent their part of Sussex.
Lewes obviously cannot match Brighton for size or stature, meaning the fixture is not a regular feature of the modern professional game.
Nevertheless, local derbies do not always need league positions or major trophies to matter, and Brighton vs Lewes retains a place in the Seagulls' wider rivalry history.