Zuffa Boxing has announced the signing of WBO super lightweight champion Shakur Stevenson.The undefeated American joins the promotion backed by UFC CEO Dana White and Saudi boxing chief Turki Alalshikh on a multi-fight deal.Stevenson dominated Teofimo Lopez in his last fight and has promised to deliver the biggest fights in the sport with Zuffa BoxingGettyStevenson became a four-weight world champion last time out at New York’s Madison Square Garden with a masterclass to dethrone Teofimo Lopez of his 140lbs world title.Stevenson vows to become boxing’s best“Line them up, one by one, and I’ll beat all the top guys once I get them in front of me,” Stevenson, who hails from Newark, New Jersey, and is 25-0 in his professional career, said.“With Zuffa Boxing, I’m going to go after the biggest fights in the sport.“I will become the number one pound-for-pound fighter in the world.”View Tweet: https://x.com/ShakurStevenson?ref_src=twsrc%5EtfwWhite, who has also been linked to signing Oleksandr Usyk, added: “Shakur is one of the best pound-for-pound fighters in the world.“He’s 29 years old, undefeated and already a four-division world champion. This is a massive signing for Zuffa Boxing, and I’m looking forward to promoting this next fight.”Stevenson is by far the biggest name to join Zuffa Boxing’s roster so far, with the likes of Conor Benn, Jai Opetaia and Edgar Berlanga all linking up with the promotion in the last 12 months.The news of his addition comes just weeks after a potential mouthwatering clash against Devin Haney hit a stumbling block.WBO welterweight champion Haney has been ordered to face his mandatory at 147lbs Keyshawn Davis, having previously made a verbal agreement on social media to meet Stevenson at a 144lbs catchweight.Stevenson, meanwhile, has also been linked to a fight against WBC welterweight titleholder Ryan Garcia.Stevenson said he will become the best pound-for-pound fighter in the world at Zuffa BoxingGettyThe 2016 Olympic silver medallist might, however, find himself up against 140lbs contenders already signed to Zuffa Boxing, including Emiliano Vargas and Oscar Duarte.In total, the 29-year-old star has won gold at featherweight, super featherweight, lightweight and super lightweight.According to Zuffa Boxing, more information on Stevenson’s debut will be announced in the coming weeks.The promotion’s next event, Zuffa Boxing 9, is headlined by a super middleweight clash between Berlanga and Steven Butler at Infosys Theater at Madison Square Garden in New York on July 26.This is a developing story and is being updated.For the latest updates, breaking news alerts, and comprehensive analysis, refresh this page or follow our real-time news coverage by watching and listening to talkSPORT live.For broader context, explore related coverage on our homepage for the top trending stories. For the latest talkSPORT videos, download the app.talkSPORT cares about getting it right, not just getting it first and because this is a developing situation, details will change. We will be updating this page constantly with verified info, expert takes, and official statements.Stay tuned for further developments as this story continues to break.