Atletico midfielder Koke said his side "has no ceiling" after his early goal moved los Rojiblancos into the Champions League semifinals on Tuesday.
Koke scored in the fifth minute and Atletico defended well to defeat Barcelona 1-0 and move into their first European Cup semifinal since 1974.
Despite putting his name on the scoresheet, Koke insisted the win was a team effort.
"I helped the team to the semifinals but the team's work has been spectacular and we are deserving winners," Koke said.
"This team has no ceiling but we will continue with our philosophy of going game by game and on Sunday we have another.
Atletico will learn their semifinal opponent in Friday's draw, and Koke said the victory against has prepared them for the next round.
"Whoever we're drawn to play will be very difficult. We have eliminated the best and we’ll face another," Koke said.
Koke's manager, Diego Simeone, agreed with his midfielder, saying Atletico must shift focus to La Liga, where his side enjoy a one-point lead over Barcelona and two points over third-placed Real Madrid with six rounds to go.
"There's a lot of joy at having got through a tie against great rivals who have a proud history," Simeone said. "Now we are calm because we know this isn't the end, and we will try to recover as soon as possible because on Sunday we have another match.
"The first 20 minutes were very good in terms of our attitude, intensity and play. Then Barca began to get into the game and had some opportunities, so things became trickier for us.
"My players don't need words to motivate them -- they need security, decisiveness and the ability to try and get the best out of them all. I admire these players. I admire their dedication and the way they work together as a team."