The 27-year-old commanded his area to good effect and preserved a second consecutive clean sheet by making smart saves to deny Isco and Morata.
The Argentine centre-back did not put a foot wrong in defence and his leadership and tenacity were crucial to Celta's victory.
Although he struggled to deal with the overlapping runs of Marcelo, he got forward to assist the attack regularly and nearly capped his assured display with a goal.
The Athletic Bilbao loanee was rarely troubled down the left and he held a good defensive line to frustrate the Real Madrid attack.
The former Barcelona defender did a good job in man-marking Morata and he made a number of crucial headers and interceptions.
An energetic display from the Chilean who provided a good link between the midfield and attack but spurned a number of presentable opportunities.
The on-loan Barcelona youngster was involved in most of Celta's attacks and he was a constant threat with his neat footwork and composure on the ball.
Although his match was curtailed early through injury, he was pivotal to Celta's performance with his solid protection in front of the defence.
A tireless box-to-box performance from the Denmark international who broke up the Real Madrid attack brilliantly and looked tidy in possession.
A virtuoso display from the Brazilian striker who punished the Real Madrid defence with two brilliantly-taken goals.
The Celta winger caused Real Madrid plenty of problems with his pace down the left though he could not produce the finishing to match his impressive work rate.
The goalkeeper will be furious with his defence after this display, though he did emerge with some dignity after making a superb double save late on.
The Brazilian was solid in defence and one of Real Madrid's few bright sparks in attack as he got forward brilliantly to deliver teasing crosses into the box.
Dealt well with the threat of Nolito in the first half but did not get forward to assist the attack as much as Ancelotti would have liked.
Took the captain's armband but failed to lead by example as his sloppy error led to Celta's opener.
A solid display from the young defender who made several good challenges and interceptions to restrict the Celta attack.
The Germany international made his first start since November and showed few signs of rustiness on his return from injury as he offered good support to the defence and looked tidy in possession.
Showed glimpses of his quality with his fantastic ball control and excellent footwork. However, he struggled to make the most of attacking situations and proved wasteful in the final third.
The Croatia international has enjoyed a terrific season and he once again proved Real Madrid's most creative threat with his ability to pick a pass.
The Spanish midfielder struggled to impress in the midfield battle and his sloppy back-pass gifted Celta the second goal.
An energetic display from the Brazilian who showed good composure on the ball and broke up the Celta attack effectively.
The 21-year-old struggled to impress in Benzema's absence and although he fashioned openings for himself, he lacked the composure to find the net.
Added stability to the Celta midfield and was unlucky not to get on the scoresheet late on.
The Gabon midfielder added fresh legs to the Celta midfield and looked dangerous on the counterattack.
The 36-year-old striker caused problems off the bench with his physical presence and he nearly scored a third goal when he struck a shot against the post in stoppage time.
The Portugal international gave Real Madrid more joy and stability down the left.
Added fresh legs to the Real Madrid midfield though struggled to create chances for his team-mates.
The Brazilian looked lively from the bench but missed a glorious chance to score his first La Liga goal when he headed over from close range.