Swansea City and Wrexham will meet in the league for the 33rd time this Saturday evening.
Rarely, if ever, can there have been a more eagerly anticipated encounter between two clubs who are rivals, of sorts, despite being from opposite corners of Wales.
The fixture which matters most to Swansea fans is against Cardiff City, their neighbours in the south of the country.
For Wrexham, meanwhile, local squabbles with Chester and Shrewsbury Town have traditionally been the games which have come with the greatest significance.
But Swansea against Wrexham has a derby feel too, even though the cities are more than 100 miles apart.
And this particular meeting comes with increased stakes because both clubs have eyes on the Premier League.
Who will be Wales' finest?
<div class="ssrcss-1ogevb9-ErrorMessage eitf6465"><div class="ssrcss-h7lv7m-StyledInnerContainer eitf6464"><div class="ssrcss-nbxsk2-TextContent eitf6461"><h2 type="normal" class="ssrcss-vmnb6q-Heading e10rt3ze0">To play this video you need to enable JavaScript in your browser.</h2><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">This video can not be played</p></div></div></div>Figure caption, Swansea City want 'best team in Wales' tag - Vigouroux
Wrexham ended last season as top dogs in Wales, with Phil Parkinson's side finishing seventh in the Championship and Vitor Matos' Swansea seven points worse off in 11th.
It was the first time since 2000-01 - when they came 10th in what is now League One - that Wrexham had finished a campaign as the best-placed Welsh side in the English pyramid.
After three successive promotions, Wrexham, who beat Swansea at home in March after losing the reverse fixture last December, narrowly missed out on a play-off chance in May.
But their best-in-Wales status was another sign of the extraordinary progress they have made since Hollywood stars Ryan Reynolds and Rob Mac took charge of the club in 2021.
Cardiff City's promotion from League One means that for only the third time, Wales' three heavyweight clubs are together in the second tier this season.
Given that the three teams have never competed together in the top flight - Swansea and Cardiff have met there in just one season, while Wrexham have not played at the highest level - a three-way Championship scrap is a big deal in Wales.
But to an extent the fight to be crowned the nation's leading team is a sideshow, with both Swansea and Wrexham chasing a greater prize.
Most observers would regard Cardiff as outsiders to feature in the promotion race next spring as they look to re-establish themselves at second-tier level.
But the picture is different for Swansea and Wrexham, who both showed considerable ambition in the transfer market for the second year in a row this summer as they look to compete with the Championship's top sides.
These are very early days in the season, but the signs from Swansea have been encouraging, with a tally of 10 points from four games putting them on top of the table.
They have conceded only one league goal so far - the best record in the EFL - while Matos' team produced some of Swansea's best football in years during Tuesday's win over Watford.
The Swans are in buoyant mood, while Wrexham should make the journey south with renewed confidence following their midweek triumph at Millwall.
The Red Dragons endured a concerning start to the season, with chances going begging in their draws with Cardiff and Watford before they were deservedly beaten at home by a Birmingham City team who were under pressure to deliver a result.
But the mood at the Racecourse has lightened significantly thanks to that emphatic victory over a Millwall side who are widely tipped to compete for promotion once more this season.
Another away success this weekend would make this a huge week for Parkinson and his players.
A home win, by contrast, would add to the feeling that Matos' new-look team could end Swansea's run of five successive mid-table Championship finishes by securing a place in the newly extended play-offs.
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Big names - and big transfer windows
The fact that Swansea against Wrexham has been selected for a Saturday evening live television slot says something about the interest in the game, which will be watched well beyond Wales' border.
There will be plenty looking on from the United States, for example, given the owners of the two clubs.
In the red corner are Reynolds and Mac, whose Welcome to Wrexham television series has turned what was a non-league football club into a global brand.
And in the white corner are Snoop Dogg, Luka Modric and Martha Stewart, all of whom have become co-owners at Swansea over the past 17 months.
The set-up at each club is different, with Reynolds and Mac the majority owners of Wrexham while Swansea's big names in the boardroom hold only minor stakes.
But the idea at Swansea, whose majority owners are American businessmen Brett Cravatt and Jason Cohen, is to "do a Wrexham" by raising their profile through the non-playing stars associated with the club.
The theory is that increased profile means increased income, which in turn allows more money to be spent on strengthening the team.
At this stage, it is difficult to judge what difference Snoop and Co have made.
But what is not in question is that for a second successive year, Swansea showed significant ambition in the transfer market.
Eight years after a golden period in their history ended with relegation from the Premier League, Swansea look like a club determined to have a serious go at getting back to the highest level.
For Wrexham, the goal is to join the elite for the first time, with their intent even more apparent based on the head-turning sums they have spent on transfers since promotion to the Championship in 2025.
We wait to discover whether either club has sufficient resources to mount a genuine push for the Premier League this season.
And while nothing will be decided in early September, there may be a few clues on offer this weekend.