Please join me in welcoming Eddie Alvarez to @ONEChampionship! I am super excited for our fans to witness Eddie's high octane, explosive dynamite KO style. Stay tuned for more big news! @Ealvarezfight pic.twitter.com/bM3K0COlie — Chatri Sityodtong (@YODCHATRI) October 16, 2018

Former Ultimate Fighting Championship and Bellator MMA lightweight king Eddie Alvarez has officially signed with One Championship , the promotion announced.The details of the contract have yet to be revealed, but the promotion confirmed it is a multi-fight deal.“I am thrilled to announce that multiple-time world champion Eddie Alvarez will be joining One Championship on a multiple-bout contract,” said Chatri Sityodtong, chairman and CEO of the Asia-based promotion.“Eddie is one of the best martial artists in the world, and is no doubt a tremendous addition to the One roster,” continued Sityodtong. “The One Championship roster is incredibly deep with talents such as Shinya Aoki Eduard Folayang and Amir Khan , among others. I am excited to have Eddie in that mix and to see some amazing matchups and performances. This is no doubt one of the biggest athlete signings in the history of One Championship.”Alvarez had a rocky start to his UFC tenure after leaving Bellator back in 2013, losing his octagon debut against Donald Cerrone a year later.But “The Underground King” then rattled off two victories over Anthony Pettis and Gilbert Melendez before earning a shot at the lightweight belt. Alvarez took out then-champion Rafael dos Anjos with first-round punches in 2016, only to lose the belt in his first title defense against Conor McGregor at UFC 205.Alvarez leaves the UFC on the heels of a TKO loss to Dustin Poirier in a rematch of their UFC 211 bout, which was declared a no contest.