Raducanu and Alcaraz, both 22, have been subject to swirling rumours about a potential romance after they announced they would be teaming up as doubles partners for the US Open later this summer.
The pair will team up at the Billie Jean King Tennis Centre in August as they both look to add a doubles success to their US Open singles titles.
SunSport exclusively revealed earlier this week that the duo鈥檚 relationship goes further than the court, but Raducanu insists there鈥檚 no romance.
When asked about it in her pre-Wimbledon press conference, the British star said while giggling: 鈥淲e鈥檙e just good friends鈥.
Raducanu is jumping at the idea of teaming up with the World No. 2, who is hot off the heels of winning the French Open earlier this month.
Recalling when Alcaraz asked her to join forces, Raducanu said: 鈥淚 mean, of course, I had to ask my team if they wanted me to play.
鈥淏ut for me, when he asked me, I was going to say yes, I just had to kind of go through the formality of asking my coach, so I didn鈥檛 just make the decision.鈥
On how they became friends, Raducanu added: 鈥淚鈥檝e known him for years.
鈥淎nd actually in Wimbledon 2021 it was like kind of the first time I started getting to know him, and I had a good run there and then also again in the US Open in 2021.
鈥淎nd I remember he was always playing the day before me and I was playing like the second day of the round.
鈥淎nd I would see him win and then I would have motivation to win and get myself into that position too.鈥
Further lifting the lid on her connection with Alcaraz, Raducanu went on: 鈥淲e have a good relationship still. He鈥檚 obviously overtaken me a lot, but it鈥檚 nice that we have that from a while ago.
鈥淚 think for all of us, we really kind of value those connections that we had from when we were young because when you become a bit more known or a bit more successful, you just find yourself reverting back to people you knew from a young age because you鈥檙e like, that鈥檚 a real genuine connection.
鈥淏ecause it becomes very busy and you have a lot more friends but the ones that you鈥檝e known for a long time mean a lot more to you.鈥
Raducanu was spotted cheering Alcaraz on when he won Queens earlier this month.
And SunSport revealed the pair arrived at the club within minutes of each other on both occasions Emma went to watch Carlos play.
A source said: 鈥淓mma and Carlos鈥 friendship was the talk of Queens 鈥 people think there is something going on between them because they have such a spark.
鈥淗e was apparently seen at her hotel last week and on Thursday and Saturday, when Emma went to support him, Emma鈥檚 car arrived just minutes after Carlos got to Queens with his team.
鈥淚nside they were seen laughing and joking with one another.
Both Raducanu and Alcaraz will have their full focus on Wimbledon for now, with first-round action getting underway at the All England Club on Monday.
Raducanu will open her account with a clash against fellow Brit, Mingge Xu.
While Alcaraz will launch his defence of his 2024 title against Italian Fabio Fognini.
This story first appeared in The Sun and was republished with permission.