Celta ended Real's title hopes with their 2-0 win.
"After a great season in this competition the team wasn't up to scratch and we've let the Liga slip away from us in a very bad way. We can't complain or let our heads go down. We have to switch gears from the last few matches," said Ramos.
"You go home feeling sad and disappointed for having let this unique opportunity to win the title pass us by. You realise that the Spanish Liga is the best in the world because any team can beat you. Nobody would have expected Barcelona and Atlético not to win today."
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