Karen Khachanov rose to the occasion at the US Open on Tuesday night to oust Nick Kyrgios 7-5, 4-6, 7-5, 6-7(3), 6-4, and advance to a Grand Slam semifinal for the first time ever.While Khachanov's stunning display at the New York Major has enthralled fans, his striking resemblance to Australian actor Liam Hemsworth has been a major talking point on social media, with one user asking if the duo are twins.Jill 🍋@jill_millanderBut for real….is this Liam Hemsworth’s twin? #karenKhachanov #usopen #USOpen20226But for real….is this Liam Hemsworth’s twin? 👀😳#karenKhachanov #usopen #USOpen2022 https://t.co/jDXpXinXW8"But for real. Is this Liam Hemsworth’s twin?" the tweet read.The Tennis Letter@TheTennisLetterreCAPTCHA test: Karen Khachanov or Liam Hemsworth?141reCAPTCHA test: Karen Khachanov or Liam Hemsworth? https://t.co/iQCczqGTIq"Karen Khachanov or Liam Hemsworth?" another User wrote.The resemblance first came to light in 2018 when a fan thought he was watching Liam Hemsworth take on Rafael Nadal in a tennis match.Karen Khachanov@karenkhachanovYeah I am the 4th brother🤔🤫 twitter.com/BuzzFeed/statu…BuzzFeed@BuzzFeedThere's A Tennis Player Who Looks Like Liam Hemsworth And I Need To Talk About It bzfd.it/2wJwfKV1996362There's A Tennis Player Who Looks Like Liam Hemsworth And I Need To Talk About It bzfd.it/2wJwfKVYeah I am the 4th brother🤔🤫 twitter.com/BuzzFeed/statu…"There's a tennis player who looks like Liam Hemsworth and I need to talk about it," the fan tweeted.Khachanov provided a witty reply to the tweet, sarcastically stating that the was the "fourth brother." Hemsworth has two older brothers, Chris and Luke."Yeah, I am the fourth brother," the Russian wrote.Hemsworth, who played Josh Taylor in the popular Australian soap opera Neighbours, has also played starring roles in the Hunger Games and the Elephant Princess.🥉@carrenobustaskaren khachanov— the celebrity lookalike— blew up on tiktok bc of the resemblance— just doesn’t show up to school anymore he’s accept his life as liam hemsworth773karen khachanov— the celebrity lookalike— blew up on tiktok bc of the resemblance— just doesn’t show up to school anymore he’s accept his life as liam hemsworth https://t.co/0n4z5pp8FiMatt L. Stephens@MattStephensStill not convinced Liam Hemsworth isn’t Karen Khachanov.2Still not convinced Liam Hemsworth isn’t Karen Khachanov."Still not convinced Liam Hemsworth isn't Karen Khachanov," a fan wrote.Ruchi Lee@Ruchi_RaniKaren Khachanov looks like Liam Hemsworth! Does anyone else see it?! #USOpentennis1Karen Khachanov looks like Liam Hemsworth! Does anyone else see it?! #USOpentennis"Karen Khachanov looks like Liam Hemsworth! Does anyone else see it?" another joined in.James@JamesAMcGheeKaren Khachanov's resemblance to Liam Hemsworth is nearing the Jared Goff to Ryan Gosling level.1Karen Khachanov's resemblance to Liam Hemsworth is nearing the Jared Goff to Ryan Gosling level."Karen Khachanov's resemblance to Liam Hemsworth is nearing the Jared Goff to Ryan Gosling level," a user opined.Courtney Nguyen@FortyDeuceTwitsDo people call Karen “The Hatchet Man” because they should. Rolls off the tongue better than “Fifth Hemsworth Brother”31Do people call Karen “The Hatchet Man” because they should. Rolls off the tongue better than “Fifth Hemsworth Brother”"Do people call Karen “The Hatchet Man” because they should. Rolls off the tongue better than “Fifth Hemsworth Brother,” a user tweeted.Karen Khachanov comes of age at US OpenKhachanov will take on Casper Ruud of Norway in the semifinals of the US Open on Friday.US Open Tennis@usopenKhachanov has done it!The No. 27 seed defeats Kyrgios in a tough five-setter.1404284Khachanov has done it!The No. 27 seed defeats Kyrgios in a tough five-setter. https://t.co/psE7pGG3bcThe 27th seed got past Jack Draper, who retired in the third set of their third-round encounter, before defeating Pablo Carreno Busta in five sets to get to the quarterfinals of the US Open.Khachanov also made the quarterfinals of the 2019 French Open and at Wimbledon last year.Back in 2018, the Moscow-born player gave Rafael Nadal a run for his money in the third round of the US Open before going down 5-7, 7-5, 7-6(6), 7-6(3).Also Checkout:- US Open 2022 Results