Barcelona's appointment of Quique Setien, a fervent disciple of Johan Cruyff, came the day after Zinedine Zidane won his ninth final out of nine as coach of Real Madrid.
With both teams level on points at the top of La Liga, Spain's closest title race in years will be as much a contest of identity and beliefs as points won and lost.
Real Madrid, the club that defines itself by winning, against Barcelona, where winning is seen as the result of something more profound, a style heralded by Cruyff that has become their footballing philosophy.
Atletico Madrid and Sevilla, both five points behind, are still in touch but playing catch-up.
Setien once said he would have given his little finger to play under Cruyff. Now, 34 years later, he has the chance to resuscitate those ideals after two years under Ernesto Valverde when pragmatism took a greater hold.
Barca's new coach is not well-known outside of Spain and, at 61, he may be in the twilight years of his career.
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"For me this is the pinnacle," he said at his unveiling on Tuesday.
His previous clubs are not illustrious. They include Lugo, Logrones, Las Palmas, Poli Ejido, Racing Santander, Real Betis and one game in charge of Equatorial Guinea. His list of trophies begins and ends with one Spanish Super Cup in 1985 with Atletico Madrid.
But his work and words up to this point could leave the impression of someone that has been preparing to coach Barcelona his entire life.
"When I was a player, coaches tried to set guidelines for me," Setien, a former Spanish international, told Marca in 2018.
"But on the field, I tried to express myself and it was only when I saw Johan Cruyff's Barcelona play that I started to understand how things really worked." "Having the ball makes you a football player, not running after it," he said last year.
It remains to be seen how Setien's appointment will affect La Liga's title race. Will Real Madrid's players feel their chances are boosted or harmed by Valverde's removal?
- 'We always want to win' -
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Fixtures (GMT)
Friday
Leganes v Getafe (2000)
Saturday
Levante v Alaves (1200), Real Madrid v Sevilla (1500), Osasuna v Real Valladolid (1730), Eibar v Atletico Madrid (2000) Sunday