Emma Raducanu penned a sweet note for her US Open mixed doubles partner, Carlos Alcaraz, after their first-round match at the tournament. This garnered the attention of the American tennis player, Danielle Collins, who shared a hilarious reaction to the post.Raducanu and Alcaraz started their US Open mixed doubles on August 19 at the Arthur Ashe Stadium, where they locked horns with Jack Draper and Jessica Pegula in the first round. The Brit and the Spaniard were eventually bested by the Brit-American duo, who claimed a 4-2, 4-2 win.Following the conclusion of their time together at the US Open, Raducanu shared a bunch of pictures from the match with Alcaraz on her Instagram handle, where they were seen laughing and having fun on the court while playing. Making her feelings known about playing alongside the Spaniard, she penned a note in the caption that read:"Crazy!! @carlitosalcarazz 🎊🤩 thank you partner, had so much fun," wrote Emma Raducanu. View this post on Instagram Instagram PostCollins then gave a hilarious reaction in the comment section, playfully suggesting that Raducanu 'carried' Alcaraz in the match. Her comment read:"Way to carry the team em!!🥳" wrote Collins.Collins' comment on Instagram | Source: IG/@emmaraducanuEmma Raducanu talks about her friendship with Carlos Alcaraz Emma Raducanu recently sat for an interview with The Tennis Letter, where she discussed her friendship with Carlos Alcaraz. She revealed that she has known Alcaraz since 2021 while referencing their breakout moments at Wimbledon and the US Open in 2021."Yeah, we go back a long way, and I think we really started getting to know each other more in 2021. When I had that little run at Wimbledon, he also—I think he won in five sets in the first round or something—and then all through the US Open, he had a big breakout win against Steph in the third round," said Emma Raducanu. She further spoke about how she kept in touch with him after their 2021 runs."I was always trying to join him in the next round because he was playing the day before me. Ever since, we've stayed in touch, and he's obviously done so well and kept winning. It's been amazing to see, because, you know, we were speaking and friends before either of us had won anything, you know?"After Emma Raducanu and Carlos Alcaraz were announced as partners for the 2025 US Open mixed doubles tournament, rumors about them having a romantic relationship started doing the rounds on the internet. But Raducanu subsequently shared a clarifying statement, saying that they were nothing more than friends.