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Swedish substitute Swedberg cleverly diverted a cross from Bryan Zaragoza past Thibaut Courtois in the 53rd minute to put Celta ahead and had an easy finish three minutes into added time, going around the goalkeeper to wrap up the points.

Madrid's cause was not helped by the 64th minute dismissal of Fran Garcia, who picked up two yellow cards in 60 seconds, but it laid siege to the visitor's goal for the last 20 minutes as Celta went into a defensive shell to hold onto its advantage.

Real Madrid defender Alvaro Carreras was also dismissed for two cautions, his second coming in stoppage time at the end of the game as the home side's frustrations boiled over.

It was a second clean sheet in 15 league games this season for Celta, whose keeper Ionut Radu made a first-half save from Jude Bellingham's header and stopped a second-half free-kick whipped in by Kylian Mbappe.

Madrid stays on 36 points from 16 games as Celta celebrated a first win at the Estadio Santiago Bernabeu in 19 years, leaving the Galician club with 19 points.

"With the team they have and their quality, it's difficult to match them, but we read the game well," Celta striker Borja Iglesias said. "We had possession, we played in their half, we played a fantastic match."

Celta jumped from 14th to 10th while the defeat ended Madrid's 100 percent home league record this season after six successive wins.

Xabi Alonso's stuttering team has won only one of its last five league games as it awaits the midweek arrival of Manchester City in the Champions League.

Earlier in the day, Espanyol moved up to fifth as Roberto Fernandez’s first half penalty handed it a 1-0 home win over Rayo Vallecano as both sides finished with 10 men.

Elche's Rafa Mir scored twice as it ran out 3-0 home winner over struggling Girona

 While Valencia and Sevilla remained in the bottom half of the table after a 1-1 draw.