Real Madrid coach Carlo Ancelotti admits they weren't good enough for defeat at Atletico Madrid on Sunday.
Alvaro Morata struck twice as Atletico won 3-1.
Ancelotti said, "We didn't start well. We didn't defend well, we were soft in our own area and we weren't clinical. After they went 2-0 up, they played the game they wanted to play, defending very well and looking for quick transitions. They were better than us.
"We changed the formation because we started with a diamond, with Modri playing in the centre of midfield and with Bellingham and Rodrygo as the forwards. We didn't play Joselu because we were looking for more control of the ball with the presence of an extra midfielder. Bellingham's position in an attacking sense hasn't changed. It wasn't a problem of who played, it was a problem of defensive frailty that we hadn't had in the first few games. We'd only conceded three goals in six games and in 45 minutes we've conceded three goals. We were weak. It's fair to say that. It wasn't a good night.
"It's something we've already spoken about and we'll continue to talk about it. It's important. We've gone behind early four times and three times we've been able to come back. We came close today, but the third goal ended the game. We did well at the end of the first half, but 3-1 was too much to turn around."
On Real's defence, Ancelotti also said: "I'm not going to talk about individuals. All I'll say is that we didn't defend well. The team wasn't compact, especially in the first half and Atltico capitalised on that. The three goals were carbon copies. They were able to split the centre backs, who weren't well positioned in the area. We weren't compact for the three goals."
