Barca had 24 efforts on goal, but lost the first-leg of their semifinal 1-0.
"We have the feeling that we created a lot of clear chances, the only thing we were lacking was the final touch. Sometimes this happens. We'll try to be more effective in the return leg, we have confidence in our ability to overturn today's scoreline. We have an adverse result and we have to work harder seeing that we're capable of doing it. It's not an issue of luck," said Iniesta.