Maycee Barber, a 21-year-old touted as an athlete who could potentially become the youngest-ever UFC champion, had her dreams crushed by a classy veteran fighter on Saturday.Roxanne Modafferi overcame an underdog status to out-work and out-experience her younger opponent, besting her with extraordinarily high-level jiu jitsu.Modafferi dropped Barber in the second round and made her bleed all over the canvas. Barber suffered a knee injury so bad she hobbled out of the arena with the assistance of her team.Modafferi said she hoped her family and friends made big money from her upset victory.Visit Business Insider's homepage for more stories.LAS VEGAS ' A 21-year-old American's dreams of becoming the UFC's youngest-ever champion were crushed on Saturday by a classy flyweight veteran in one brutal and bloody win.Before the bout, Maycee Barber was being touted as an athlete who could potentially become the youngest-ever UFC champion. Business Insider spoke to her on Thursday in Las Vegas, and she confirmed her ambition of being a "record-breaker" to us.Roxanne Modafferi, her older opponent, stood in her way.Modafferi told us she'll hand her her first loss and show everyone new moves on fight night Saturday.On January 18 at the T-Mobile Arena in Las Vegas, on the last bout of the preliminary UFC 246: McGregor vs. Cowboy card, the magnificent Modafferi did just that.Barber was a -1000 favorite before the night, but shortly into the fight it was clear Modafferi was not only on top, but dominant, showing a vast difference in Octagon intelligence by out-working and out-experiencing the younger fighter with extraordinarily high-level jiu jitsu.Modafferi knocked Barber down in round two, made her bleed all over the canvas, and before the third round began, there was a question mark over whether Barber could even continue, with the doctor saying she had suffered a small ACL tear.Watch the knockdown here:DROPPED! '@RoxyFighter putting Maycee down in R2! #UFC246 pic.twitter.com/mgkR1oIH7Q' UFC (@ufc) January 19, 2020The judges scored the fight as a dominant victory for Modafferi with scores of 30-27, 30-27, and 30-26.Barber, meanwhile, had to be helped out of the arena because her injury was so bad.On her way backstage, @MayceeBarber receives consolation from her mother in the crowd '' #UFC246 pic.twitter.com/YVP1I2AL2D' ESPN MMA (@espnmma) January 19, 2020After her win was announced, Modafferi said she was relieved and satisfied to have bounced back from a loss, to score her win on Saturday. "I hope my friends and family made some big money from this fight!" she added, in a reference to her underdog status."I have many plans now, not sure which one will come first, but I'll fight anyone. I'm not afraid of anyone in the flyweight division ' I want to keep winning and keep improving."Read more:An American southpaw knocked his UFC opponent down with a crafty left hand, held him down with one fist, then punched him 11 times while he lay defenseless on the canvasFrom the fighting pride of Ireland to MMA's Jekyll and Hyde: Why Dublin started turning its back on Conor McGregorManny Pacquiao's manager says Conor McGregor knows where to go if he wants a 'proper fight' after UFC 246Conor McGregor's black belt in jiu jitsu 'is coming,' head trainer John Kavanagh saysA fight against Conor McGregor could generate $250 million and be Manny Pacquiao's retirement party, according to an expertWhat Conor McGregor is really like, according to the man who cuts his trademark hairJoin the conversation about this storyNOW WATCH: 5 things about the NFL that football fans may not know Click here to read full news..