Real Madrid attacker Vinicius Jr defended coach Zinedine Zidane after their Champions League defeat to Shakhtar Donetsk.
Vinicius was on the scoresheet for the 3-2 loss.
The Brazilian said: "It's hard to speak about a game like this. We didn't play well and do what Zidane wanted. Now we have to train really hard and focus on el Clásico, which is always a great occasion. We will have to be at our best to win.
"We have to keep working hard, continue improving and try to find our best form to win things this season. Tomorrow we go back to Valdebebas and we have to train hard and focus so we can play well on Saturday."