Despite taking an early lead through Karim Benzema, some chaotic defending from the likes of Sergio Ramos and Raphael Varane saw Madrid concede an incredible three penalties - all scored by Carlos Soler.
So which players disappointed most for Madrid and who stood out for Valencia in their surprise victory?
✔️ GOOD PERFORMANCE
The Spanish goalkeeper may have conceded one goal to Benzema but he played a key role in Valencia's win with a number of excellent stops. In total, Domenech made five saves to frustrate Madrid.
❌ BAD PERFORMANCE
Not the first time this season that Varane has had a horrific evening for Real Madrid, and he was the worst player on the pitch at Mestalla. Not only did he score the own goal that put Valencia in the lead at 2-1 just before half time, he also made no tackles and won none of his four challenges.
Sergio Ramos was just as bad as his defensive partner as he also put in an error-prone performance. Along with Lucas Vazquez and Marcelo, Ramos was also responsible for conceding one of the three penalties. He won five of his 12 duels and four of his seven aerial duels as he failed to dominate as he so often has over the years.
⭐ STAR MAN
A hat-trick of well-taken penalties from the 23-year-old helped Valencia to a famous win over the Spanish league champions. The treble means that Soler has already surpassed his goal tally from the whole of last season. Regarded as one of Spain's most gifted youngsters a couple of years ago, he will now be hoping this acts as a springboard to realise his potential.