Julen Lopetegui looks to be on the brink of being sacked as Real Madrid head coach after a shock 2-1 home defeat to Levante extended the European champions' abysmal run of form.
The Madrid boss made five changes on Saturday in a bid to end a run of four games without a win or a goal.
But Jose Luis Morales and a Roger Marti penalty put Levante two up inside 13 minutes in a dramatic LaLiga match that included three VAR reviews.
Madrid broke their club record for the longest goalless run in their 116-year history by failing to score in the first 56 minutes, a streak finally ended by Marcelo's strike 18 minutes from time.
But despite hitting the woodwork on three occasions, Madrid fell to defeat that leaves Lopetegui under further pressure to save his job, with the Clasico taking place in just eight days' time.
It took only six minutes for Levante to strike, Sergio Postigo's long ball completely missed by Raphael Varane, allowing captain Jose Luis Morales to round Thibaut Courtois and slide into an empty net.
Before they knew it, Madrid were two down. Varane handled when trying to challenge Marti, and after a lengthy VAR review led to a penalty award, the striker took the spot-kick himself and beat Courtois, who got a hand on it.
In a frantic period, Madrid thought they had one back when Marco Asensio headed in from under the bar after Casemiro's aerial effort smashed off the woodwork, but another long VAR review denied the hosts due to offside.
Madrid hit the bar again when Mariano Diaz sent a thumping header towards goal, while Lucas Vazquez somehow failed to beat Oier Olazabal from close range in another big opportunity.
Just before half-time, a magnificent Levante passing move, finished off by Ruben Rochina, was then ruled out through VAR due to offside in the build-up.
Lopetegui brought on Gareth Bale on at half-time, while Karim Benzema and Dani Ceballos soon followed.
But it took some time for the breakthrough, Marcelo lashing in a right-footed 15-yard strike after Benzema's assist.
The striker's curling 20-yard strike hit the post in the closing stages, and that was the nearest Madrid came to an equaliser, with Mariano's late tap-in ruled out for offside in a match that kept the officials busy.
Levante should have made it three at the death, Morales firing wide when clean through, before the final whistle was greeted by boos from the home fans.
What it means: Clasico or bust for Lopetegui… if he makes it that far
Lopetegui was already under huge scrutiny after defeats to Sevilla, CSKA Moscow and Deportivo Alaves, along with a goalless draw against Atletico Madrid in the last four games.
After making a bold team selection that included naming Bale, Toni Kroos and Benzema on the bench, another dreadful result here, coupled with an historically bad goalscoring streak, has him on the brink of the sack.
The Clasico away at Barcelona next week will surely decide Lopetegui's fate, if he even makes it that far after the fallout from this loss and a key Champions League match against Viktoria Plzen.
Olazabal does former club Barca a favour
Former Barcelona back-up Olazabal was going to have to play well if Levante were to record a famous win at the Santiago Bernabeu, and he certainly did.
Also helped by his woodwork which Madrid struck three times, Olazabal made 11 saves, his best being a close-range block with his leg on Vazquez just before the break. If it had gone in, all the momentum would have been with Madrid.
Varane at fault for Madrid
A four-time Champions League winner, Madrid have come to rely on Varane. But the decorated France international, fresh from winning the World Cup, has struggled this season and was particularly culpable in this game.
His mistake, failing to cut out a long ball from Postigo, allowed Morales to open the scoring and he then conceded the penalty for Levante's second. From there he was part of a Madrid defence that was wide open and regularly vulnerable to Levante's counter-attacks, the visitors having a third goal ruled out before the break.
Madrid have to find a response at home to Plzen in the Champions League on Tuesday, but all eyes are already on their massive trip to Camp Nou to face rivals Barcelona in LaLiga on Sunday. Buoyed by a third straight league win, Levante host Leganes next Saturday.
|Hard for Lazio to hold on to Milinkovic-Savic, says Lotito|
|Australia´s next generation pay tribute to retiring Cahill|
|Bairstow pushing hard for Test recall|
|Cane eyes 2019 Super Rugby return after neck break|
|Van Dijk finds time to console referee during Dutch delight|
|Cahill sheds tear at end of phenomenal Australia career|
|WATCH: Pelicans coach Gentry interviews himself|
|Where does Chiefs-Rams classic rank among NFL´s highest-scoring matches?|
|Australia 3 Lebanon 0: Boyle bags brace on Cahill farewell|
|Guendouzi underlines desire to represent France|
|I might need a couple of drinks to relax after that! - Rams coach McVay|
|Juventus´ Alex Sandro has Premier League ambition|
|Ederson taking goalkeeping to another level, says City hero Weaver|
|Ceferin dismisses "super league" plans as fiction|
|Rams defeat Chiefs in one of the highest scoring games in NFL history|
|Kemba Walker leads Hornets to win over Celtics|
|Gomez praises ´top player´ Van Dijk, Stones|
|Cricket Australia to maintain Smith, Warner ball tampering bans|
|Brazil´s Tite encouraged by Neymar captaincy|
|Holmes set for NFL switch after Cronulla release|
|Dier encourages English youngsters to follow Sancho´s lead|
|Southgate promises further changes to England squad|
|Jones sceptical over Pocock injury|
|Sane encouraged despite Germany´s ´annoying´ Nations League draw|
|Character got Netherlands through, says Koeman|
|Netherlands´ focus still on Euros - Van Dijk|
|Ireland will be ready for qualifiers, insists O´Neill|
|Smith undergoes successful surgery, Redskins sign Sanchez|
|Germany 2 Netherlands 2: Dramatic five-minute fightback seals Oranje progression|
|Denmark 0 Republic of Ireland 0: Thrills at a premium again in Aarhus|
|O´Brien could return for start of Six Nations|
|Cavani: Neymar and I are ´friends, brothers, team-mates´|
|Pothas named Windies interim head coach|
|LA Galaxy planning for Ibrahimovic stay|
|NFL will return to Mexico City in 2019|
|Broner vows to end Pacquiao´s career in Las Vegas|
|UEFA should punish PSG and Man City, says LaLiga chief|
|Teenage driver Floersch has ´no fear of paralysis´ after operation|
|Mancini bemoans Italy´s misfortune in front of goal|
|Sprint legend Johnson ´pretty much back to normal´ after stroke|
|Bournemouth defender Adam Smith out for three months|
|World champions France out to end 2018 on a high|
|I told him there´s no future in football! A-Rod relieved to be ignored by Mahomes|
|Dembele must focus and be more responsible - Suarez|
|Neymar could return one day – Barca chief|
|Cole backs West Ham to keep Arnautovic|
|Injury rules Bernardo Silva out of Poland clash|
|Lamar Jackson debut start ´spectacular´ - Ravens coach Harbaugh|
|Babar run out the turning point, laments Sarfraz|
|West Ham boost London Stadium capacity to 60,000|
|A great advertisement for Test cricket - Williamson revels in stunning win|
|Van Dijk one of the world´s best - Klaassen|
|Floersch had ´angel on her shoulder´ in horror crash|
|Gascoigne charged with sexual assault|
|I am going to stay at Chelsea and fight, insists Giroud|
|Hansen to make announcement on All Blacks future|
|I have reached the top by joining Chelsea - Sarri|
|Bonucci tells Italy boo boys to ´live with less envy´|
|Dramatic Pakistan collapse gives Stead first New Zealand Test win|
|Button enjoying racing for first time in years|
|Dortmund chief not planning Pulisic sale|
|Theismann: Smith leg break ´heart-wrenching´ to watch|
|Wolves defender Jonny suffers knee injury|
|Holmes to meet with Sharks amid NFL switch talk|
|LeBron made 51 points ´look easy´, says Walton|
|McGuire signs four-year deal with Cowboys|
|Bears beat Vikings to extend NFC North lead|
|Peng overcomes Davis in Houston final|
|Kerr says this has been his toughest stretch as Warriors coach|
|LeBron scores 51 in Lakers´ win, Warriors fall to Spurs|