Real Madrid coach Zinedine Zidane was pleased with their 2-1 win against Leganes.
Gareth Bale and Borja Mayoral scored the goals for Real.
Zidane said: “I'm pleased with the attitude of players today with ten changes, guys who haven't had much playing time. The attitude was exemplary. It was a fantastic first half and we dropped off a bit in the second, but we took the three points.
"We can't be happy with our performance in LaLiga overall. We dropped too many points early on but we have improved. Now we have to go back to work because it's the biggest game of the year on Tuesday.
“I don't know how significant the first-leg advantage will be in the Champions League. We know what happened against Juve and last year against Bayern as well. We need a huge performance, we must play better than we have done all year if we're to qualify. We're ready. We're going to give it all we've got to make it to the final."