Thirteen years ago, José Mourinho turned El Clásico into must-watch television — a ferocious, edge-of-your-seat collision between Real Madrid and Barcelona that went far beyond football. Now, as Real Madrid head coach once more, Mourinho is back in the dugout for the fixture that defined his Spanish reign, and he has unfinished business.

The rivalry he helped make unmissable

When Mourinho first arrived at Real Madrid, El Clásico was already the biggest club fixture on the planet. But it was during his tenure that the rivalry reached a new level of intensity — a combustible mix of tactical warfare, personal grudges, and world-class talent that captivated audiences across every continent.

Pep Guardiola's Barcelona, powered by Lionel Messi, were the dominant force of European football. Cristiano Ronaldo, Mourinho's prize weapon, was their closest challenger. Every meeting between the sides crackled with an electricity that felt almost impossible to manufacture — and yet Mourinho engineered it, match after match.

Those clashes produced extraordinary moments: red cards, touchline confrontations, late goals, and tactical masterclasses that football analysts still debate. Mourinho's Real Madrid pushed Barcelona harder than almost anyone else during that era, even if the La Liga title proved elusive in his first two seasons.

Back in the spotlight

Now, more than a decade later, Mourinho is in the opposing dugout once more. The players have changed — Messi is long gone, Ronaldo is in Saudi Arabia — but the stage remains as vast and unforgiving as ever. A new generation of supporters will experience El Clásico through his eyes for the first time.

Mourinho has always thrived when the spotlight is brightest and the stakes are highest. His record in high-profile single matches is the stuff of managerial legend, and a fixture like El Clásico suits his instincts for occasion perfectly.

Whether Real Madrid can match the attacking brilliance of Guardiola's era matters less than the mentality Mourinho demands from his squad — disciplined, combative, and entirely focused on the task. That approach served him well before, and he will be counting on it again on the biggest stage in club football.