Carvajal was particularly pleased with the clean sheet.
"We started very strongly during the opening few minutes but then the team began to leave too much space between the lines and Betis put us under big pressure. Today, our main goal was to work defensively and to keep a clean sheet, and we managed just that. We got the goal we needed and take an important win which sends us into the international break in more relaxed fashion," he said.
“At half-time the coach made a few tactical corrections to help us hurt Betis and increase our intensity in the press, and that helped us win the ball back higher up the pitch. There are a lot of very good quality players here and that's clear. Miguel came on today and did a great job."
He added: "I just want to keep this up. It's been a long time since I felt this good. Now, with the international break we can rest up and recharge our batteries."
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