Karl Anderson has lost the NEVER Openweight Championship to Tama Tonga at Wrestle Kingdom 17.Anderson previously defeated the former Bullet Club member to win the title. He then signed with WWE and returned alongside Luke Gallows to side with AJ Styles.The Machine Gun briefly returned to NJPW to successfully defend the title against Hikuleo before being challenged by Tama. This angle led to a rematch at the Tokyo Dome, which was won by the 40-year-old star.njpwworld@njpwworld東京ドーム大会 WRESTLE KINGDOM 17NEVER無差別級選手権試合かつての仲間、プロレスの師匠…タマ・トンガは今日勝って師匠超えを果たせるか @MachineGunKA × @Tama_Tonga LIVE on #njpwworld登録&視聴|Sign Up Now‼︎⇒njpwworld.com#njpw #wk17 #WWE14736🔥東京ドーム大会 WRESTLE KINGDOM 17🔥NEVER無差別級選手権試合‼️かつての仲間、プロレスの師匠…タマ・トンガは今日勝って師匠超えを果たせるか⁉️🆚 @MachineGunKA × @Tama_Tonga 📲 LIVE on #njpwworld📡登録&視聴|Sign Up Now‼︎⇒njpwworld.com#njpw #wk17 #WWE https://t.co/7P4p476oYoThe finish to the match saw Tama hit a Gun Stun from the second rope before struggling to hit a second one. He went for the pinfall on Anderson and successfully won the title.This could potentially mark the end of Anderson's stint in NJPW. He is expected to return to WWE and reunite with Luke Gallows, AJ Styles, and 'Michin' Mia Yim, his stablemates in The O.C.Karl “The Machine Gun” Anderson@MachineGunKAGood luck 🏻 @Tama_Tonga twitter.com/njpwglobal/sta…NJPW Global@njpwglobalHOURS TO WRESTLE KINGDOM: Will @tama_tonga rescue NEVER Openweight Championship gold? Will @machinegunka keep holding the NEVER Openweight Championship to ransom?LIVE in English ONLY on njpwworld.com!njpw1972.com/139641#njpw #wk1715816HOURS TO WRESTLE KINGDOM: 5️⃣Will @tama_tonga rescue NEVER Openweight Championship gold? Will @machinegunka keep holding the NEVER Openweight Championship to ransom?LIVE in English ONLY on njpwworld.com!njpw1972.com/139641#njpw #wk17 https://t.co/EhIOJGjHvqGood luck 👍🏻 @Tama_Tonga twitter.com/njpwglobal/sta…The Machine Gun also walked out at the Tokyo Dome, representing The O.C. He and Gallows were previously recruited back into the Bullet Club by Jay White. However, their tenure with the group could potentially come to an end after NJPW Wrestle Kingdom 17.Did you enjoy Karl Anderson's tenure as the NEVER Openweight Champion? Sound off in the comments section below.