Ryan Garcia knocked his Valentine's Day opponent out with a left hook to the face in the very first round.The nature of the win captured the attention of the boxing industry, with a DAZN commentator saying "a new star is born."Mayweather Promotions CEO Leonard Ellerbe, who represents a rival of Garcia's, was also impressed.Garcia advanced his professional record to 20 wins (17 KOs), unbeaten, and you can watch his devastating KO of Francisco Fonseca below.Visit Business Insider's homepage for more stories.A 21-year-old American bounced his opponent's head off the canvas with a left hook knockdown on Friday, and the boxing industry is saying "a new star is born."Golden Boy Promotions phenom Ryan Garcia has long been touted as a poster boy for boxing.The Californian looks like a baby-faced assassin, has blisteringly fast hands, and, on February 14 at the Honda Center in Anaheim, showed the world that highlight-reel power lurks within his gloves.In the very first round of a fight against Francisco Fonseca, Garcia needed only a handful of punches to end the fight, and the shot that closed the show was a single left hook that landed plush on the side of the chin.As Fonseca fell, with his head bouncing off the canvas and his arms in the air, Garcia performed a cut-throat gesture before nonchalantly walking to a neutral corner.The fight was over. He had won.Watch the knockout here:Lo acab en un instante! Gancho venenoso de izquierda que le aplic Ryan Garca a Francisco Fonseca para mandarlo al pas de los sueos en el 1 asalto!!#ESPNKnockOut #GarciaFonseca pic.twitter.com/qO66bus8Ma' ESPN KnockOut (@ESPNKnockOut) February 15, 2020Here's another angle:The Ringside Angle ' pic.twitter.com/FiTrV84Rnu' DAZN USA (@DAZN_USA) February 15, 2020The bout was broadcast on DAZN in the United States and fight commentator Sergio Mora later tweeted that "a new star is born."A NEW STAR IS BORN!!!!! @KingRyanG ' '' #boxing' Sergio Mora (@TheLatinSnake_) February 15, 2020Mayweather Promotions CEO Leonard Ellerbe, who represents Gervonta Davis, a lightweight rival of Garcia's, was also impressed.Damn @KingRyanG you doing it like that'' Ok ok ''' Leonard Ellerbe (@LEllerbe) February 15, 2020Garcia's victory sees his flawless record as a professional fighter move to 20 wins (17 KOs), unbeaten.Read more:Manny Pacquiao has signed with Paradigm SM, an agency which also represents Conor McGregorTeofimo Lopez, a 22-year-old American, says he's doing all he can to fight one of the world's best boxers because he 'ain't no b----'2 of the world's best boxers are desperate to fight Conor McGregor, proving the balance of power has swung wildly towards UFC and Dana WhiteJorge Masvidal would be the ultimate bare-knuckle brawler and 'would take some guys apart,' BKFC boss David Feldman saysDominant women's champion Valentina Shevchenko kicks so awesomely she looks like a video game cheat code has come to lifeSEE ALSO:The 15 best boxers in the world right nowJoin the conversation about this storyNOW WATCH: 5 things about the NFL that football fans may not know Click here to read full news..