Real Madrid was thrashed 4-1 as struggling Valencia winger, Carlos Soler scored a hat-trick of penalties to raise further doubts over La Liga's reigning champions on Sunday at Mestalla.
AllNews understands that this is the first time Madrid have conceded four goals since letting in five against Barcelona in October 2018.
Madrid took the lead through Karim Benzema but presented Valencia with four gifts at Mestalla, including three spot-kicks and an own-goal scored by Raphael Varane, to fall to another surprise defeat.
After back-to-back losses to Cadiz and Shakhtar Donetsk last month, Zinedine Zidane's side appeared to have turned a corner with wins over Barca, Huesca, and Inter Milan.
Yet this result puts the pressure back on ahead of the international break, with Madrid now fourth in the table, four points behind early leaders Real Sociedad.
A disappointing night also got worse when Benzema was forced off late on with what looked like a groin injury.
Valencia, meanwhile, started the day in 17th after enduring a nightmare start to the campaign, on the back of a transfer window which saw them sell five key players and fail to replace any of them.
A stirring victory though pushes Javi Gracia's team up to ninth and may prove a turning point in their season.
There was certainly an element of fortune in Valencia's goals, all of the unusual and some of the bizarre.
But Soler did brilliantly to beat Thibaut Courtois three times, particularly having missed his first attempt, which was retaken after the Belgian came off his line.
Madrid was also without Casemiro and Hazard after they both tested positive for coronavirus but a heavy loss continues a worrying trend of defensive vulnerability.
Solidity was the key to them winning the title last season but they are now seven matches without a single clean sheet.
The first half turned on two decisions that went Valencia's way but Madrid could have few complaints.
They took the lead when Benzema unleashed from the edge of the area but conceded a penalty when Jose Luis Gaya's cross struck the arm of Lucas Vazquez.
Chaos followed as Soler's penalty was saved by Courtois and then his rebound came back off the post to Yunus Musah, who finished on the half-volley.
Replays showed Musah had entered the box too early but Courtois was also off his line, making his save illegal and handing Soler a retake.
He made no mistake at the second attempt and then Valencia pulled in front when Varane skewed a cross towards his own-goal and got tangled with Courtois while attempting to clear.
The ball was shown to have crossed the line while Valencia was lucky to escape punishment for a tackle on Marcos Asensio by Denis Cheryshev in the build-up.
Madrid had work to do but Valencia started the second half stronger, Lee Kang-In hitting the post before two more penalties were awarded.
Marcelo wrapped his foot around Maxi Gomez in the area before Sergio Ramos tackled Musah and as the ball popped up, Madrid's captain knocked it away with his left hand.
Soler stepped up for this third and fourth spot-kick of the match and scored both to complete the defending champions' misery.