Real Madrid captain, Sergio Ramos, has said the LaLiga giants cannot ordinarily l lose like they did against Atletico Madrid, after suffering a 7-3 defeat on Friday.
Diego Costa netted for Diego Simeone's men, as they thrashed their bitter rivals at the International Champions Cup in New Jersey.
Atletico led 4-0 after 28 minutes and 5-0 at half-time, as Los Blancos were put to the sword.
Zinedine Zidane's side managed to pull three goals back via Nacho Fernandez, Karim Benzema and Javi Hernandez.
"We're obviously not feeling great right now.
"This has only just begun, they're preparation games to get us up to the top level. There are many ways in which to lose, but we can't be doing it like we did today.
"We played the game like a friendly, it's a big margin and we head away frustrated. It's a very poor result and we have to try and reach the levels we aspire to.
"This team's ambition remains intact. We've won an awful lot but that's in the past now.
"We have to forget about what happened last season, this is a pre-season campaign and it's far too soon to draw conclusions and be assessing things. We have to keep training as we are every day and we'll gradually reach our best to take on the challenges of the new season," Ramos told reporters.