John Lineker suspended for 1 year after positive drug test in final ONE fight
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May 20, 2026
Former ONE bantamweight champion John Lineker failed a drug test for multiple banned substances in his last bout in March and has parted ways with the promotion, MMA Fighting has confirmed following a report from Bangkok Post. Lineker tested positive for tamoxifen, an anti-oestrogenic substance, and anabolic androgenic steroid metandienone. The test took place on […]
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