Carlos Alcaraz woke up on Monday morning as the new World No. 1 in the ATP rankings at the young age of 19, thus creating a new record. However, Alcaraz is the youngest ever World No. 1 on the men's circuit alone; he does not hold the record across both men's and women's tours, something many tennis fans made clear in response to a recent social media post.The Spanish youngster defeated Casper Ruud in the US Open final to clinch the top spot as well as his maiden Grand Slam singles title. But Martina Hingis still holds the record for being the youngest tennis player to become World No. 1, having clinched the top spot in 1997 at the age of 16.A recent post from the US Open's Twitter handle did not go down well with fans, particularly the statement calling Carlos Alcaraz the "youngest tennis player to ever be Number 1 in the world."US Open Tennis@usopenYour new World No. 1 come tomorrow morning:106302197Your new World No. 1 come tomorrow morning: https://t.co/qbOCv4HNQTMany fans pointed out the error in the stat and expressed their dissent. Some also highlighted that the likes of Maria Sharapova, Monica Seles, Tracy Austin and Steffi Graf, apart from Hingis herself, all clinched the World No. 1 spot at a younger age than Alcaraz."The phrasing of "youngest tennis player ever to be number 1 in the world" feels like they've gone out of their way to ignore that women exist," one fan opined on Twitter, in reaction to the post.marxist-keninist@tennisywilliamsthe phrasing of "youngest tennis player ever to be number 1 in the world" feels like they've gone out of their way to ignore that women exist twitter.com/usopen/status/…US Open Tennis@usopenYour new World No. 1 come tomorrow morning:32232Your new World No. 1 come tomorrow morning: https://t.co/qbOCv4HNQTthe phrasing of "youngest tennis player ever to be number 1 in the world" feels like they've gone out of their way to ignore that women exist twitter.com/usopen/status/…"MALE PLAYER PLEASE. Sharapova, Seles, Austin, Hingis, Graf still exist," another fan wrote.Т🌴@tennisispainMALE PLAYER PLEASE Sharapova, Seles, Austin, Hingis, Graf still exist 🏻 twitter.com/usopen/status/…US Open Tennis@usopenYour new World No. 1 come tomorrow morning:979Your new World No. 1 come tomorrow morning: https://t.co/qbOCv4HNQTMALE PLAYER PLEASE Sharapova, Seles, Austin, Hingis, Graf still exist 🙏🏻 twitter.com/usopen/status/…Here are a few more reactions from tennis fans to the post calling Carlos Alcaraz the 'youngest ever World No. 1':Claire@ginandstrawbsYoungest MALE tennis player to be world number 1….. twitter.com/usopen/status/…US Open Tennis@usopenYour new World No. 1 come tomorrow morning:106302197Your new World No. 1 come tomorrow morning: https://t.co/qbOCv4HNQTYoungest MALE tennis player to be world number 1….. twitter.com/usopen/status/…Analucía@analucia_gd*Andy Murray voice* Youngest male player. twitter.com/usopen/status/…US Open Tennis@usopenYour new World No. 1 come tomorrow morning:42197Your new World No. 1 come tomorrow morning: https://t.co/qbOCv4HNQT*Andy Murray voice* Youngest male player. twitter.com/usopen/status/…Swagata@socorooopovaHow hard is to just add a male ( also don't come with the they have to play 5 set argument because except 4 tournaments they dont ) twitter.com/usopen/status/…US Open Tennis@usopenYour new World No. 1 come tomorrow morning:71Your new World No. 1 come tomorrow morning: https://t.co/qbOCv4HNQTHow hard is to just add a male ( also don't come with the they have to play 5 set argument because except 4 tournaments they dont ) twitter.com/usopen/status/…Michał 🇺🇦@radiustachyonI'm so done with this treatment of men's tour as something superior. Women's achievements are being omitted again. twitter.com/usopen/status/…US Open Tennis@usopenYour new World No. 1 come tomorrow morning:61Your new World No. 1 come tomorrow morning: https://t.co/qbOCv4HNQTI'm so done with this treatment of men's tour as something superior. Women's achievements are being omitted again. twitter.com/usopen/status/…Peter Pan 🐝@i_am_peterpan_@usopen @carlosalcaraz @atptour Much as I'm not a fan, credit where it's due, Martina Hingis was #1 when she was 16. So no, he's not the youngest #1 in history.382@usopen @carlosalcaraz @atptour Much as I'm not a fan, credit where it's due, Martina Hingis was #1 when she was 16. So no, he's not the youngest #1 in history.Ana@_anatc0Martina HingisMonica SelesTracy AustinSteffi Graf Maria Sharapova All reached No. 1 before the age of 19… twitter.com/usopen/status/…US Open Tennis@usopenYour new World No. 1 come tomorrow morning:121Your new World No. 1 come tomorrow morning: https://t.co/qbOCv4HNQTMartina HingisMonica SelesTracy AustinSteffi Graf Maria Sharapova All reached No. 1 before the age of 19… twitter.com/usopen/status/…Laurence Rooney 🇺🇦@Laurencerooney@usopen @carlosalcaraz @atptour **Youngest Male player! 🙄 Well done to him, incredible player & a great guy but a few ladies got there before him. & maybe a bit lucky Nadal didn't receive points for his Wimbledon semi run or he would be #1.@usopen @carlosalcaraz @atptour **Youngest Male player! 🙄 Well done to him, incredible player & a great guy but a few ladies got there before him. & maybe a bit lucky Nadal didn't receive points for his Wimbledon semi run or he would be #1."I'm at 60% of my potential" - Carlos Alcaraz after US Open win2022 US Open Champions PortraitsCarlos Alcaraz made a big statement after clinching his maiden Grand Slam singles title and becoming the youngest male player ever to be ranked No. 1. In response to coach Juan Carlos Ferrero saying that his pupil was still only at 60 percent of his full potential, the 19-year-old expressed strong agreement.Alcaraz stated that he was proud of his recent achievements but added that he had a long way to go to be in the same league as the Big-3 - Rafael Nadal, Novak Djokovic and Roger Federer. Alcaraz also said he aims to improve on many things in the physical and mental departments to reach that stage."It's incredible to be the youngest #1 ever. But it's much tougher what the Big 3 is doing: stay on top for 20 years. That's what I'm looking for. I don't wanna compare myself to them, but I wanna be like them," Carlos Alcaraz said, according to tennis journalist Jose Morgado."I agree with Juan Carlos. I'm at 60% of my potential. There are a lot of things to improve. Nadal, Djokovic and Federer improved a lot of things over the years. I have to improve mentally and physically. The tennis too. I can stay in my comfort zone," he added.Carlos Alcaraz has confirmed that he will play for Spain in this week's Davis Cup ties. Many expected him to skip the tournament and get some well-earned rest, but the Spaniard is committed to helping his country in the world tournament.