Carlos, is this your best match since the start of the tournament?
This is definitely my best match of the tournament. I played a great game today. I served well, I was aggressive. I started out a little nervous, but was able to calm down quickly and recover to a great level. I feel good physically, tennistically, mentally. This is important before attacking a second week in these best-of-five-set tournaments.
You go very fast on the ground. Have you ever timed yourself over short distances, 30 or 40 m?
I worked on the sprint a lot, I did a lot in training, but I never timed myself. So I don’t know what time I could do on a 30 or 40 m race. But I think I’m going fast yeah (smile).
How do you see this quarter-final against Stefanos Tsitsipas, against whom you have never lost (4-0)?
It will be a big game. We have already played good matches both. I won them all, but that doesn’t mean I’m going to win all the next ones. I have to be focused, he’s a very serious opponent. But I would say his game suits me well so far.