[11] Subsequently, Tanaka had his bonus award rescinded and in turn, was suspended for nine months after testing positive for banned substances during his post fight drug screening.
[16] Tanaka faced promotional newcomer Ricardo Ramos on February 4, 2017, at UFC Fight Night 104.
[19] After two winning bouts in his native Japan, Tanaka signed a multi-fight contract with Legacy Fighting Alliance in April 2020.
[4] Tanaka is expected to make his promotional debut by headlining LFA 117 against Ricardo Dias on November 5, 2021.
[23] Tanaka rebounded against Kunihisa Sasa on April 30, 2023, at Pancrase 333, winning the bout via unanimous decision.
[24] Tanaka next faced Sindile Manengela on July 9, 2023, at Pancrase 336, winning the bout via unanimous decision.