Alcaraz assessment
On his admiration for Shelton: “We both have huge respect for each other. Every time we face each other, we bring the level to the top. We showed a really good level of tennis today. We entertained the people.
“He’s so powerful, he can make any shots. Serving 230 (kmh) is unbelievable.
“I think we played really complete tennis, with the drop shots, coming to net, big shots, he stayed there the whole match.
“It’s great having Ben around in these matches, it’s great energy for the people. I love watching him play. I want to appreciate the moments I shared with him today.”
On how he fought mentally: “Honestly, today I fought against myself in my mind. I just tried to calm myself. In some moments I was mad, angry with myself, I wasn’t thinking very good thoughts.
“But I’m really, really happy that I didn’t let those thoughts play against me. When I was down, I just kept going.”
On his upcoming battle with Tommy Paul: "I remember that every match that I've played against him he was really difficult. In Grand Slams, in Masters 1000, and all the tournaments I've played against him it wasn't easy at all," said Alcaraz, 4-2 up versus the No.12 seed.
"He is in the quarter-finals of another Grand Slam, so his level is really high right now. He has a lot of confidence, I'm pretty sure.
"I will try to just keep going, just trying to be better. I will try to learn from the mistakes that I made today. I'm not going to make the same against Tommy, but I think for the people, it's going to be a really interesting match to watch."