In a potentially career-ending ruling, Eric Molina has received a two-year ban for using a prohibited substance when he fought Anthony Joshua in December 2016.
The 36-year-old took on Joshua for the IBF Heavyweight title at the Manchester Arena but lost to a technical knock-out in the third round.
But 18 months after the fight, UK Anti-Doping released a statement to confirm Molina had indeed tested positive for the banned substance dexamethasone.
"American boxer Eric Molina has been suspended from all sport for a period of two years following an Anti-Doping Rule Violation (ADRV).
"Mr Molina tested positive for the presence of the prohibited substance dexamethasone, following an In-Competition test on 11 December 2016, after his fight against Anthony Joshua.
"Mr Molina was charged with an ADRV pursuant to Article 2.1 of the Anti-Doping Rules presence of a Prohibited Substance or its Metabolites or Markers in an Athlete's Sample."
The CEO of UKAD Nicole Sapstead put out a further statement relating to this particular case.
"Every athlete is solely responsible for what is in their system and must adhere to the strict liability principle.
"All athletes at any level should familiarise themselves with the WADA Prohibited List and ensure they do not put themselves in a position where they may breach anti-doping regulations."
Molina, who has fought at cruiserweight and heavyweight has a record of 26 wins from 31 professional bouts (including 19 knockouts).
As well as fighting Joshua, Molina has also taken to the ring against Joshua's arch-rival Deontay Wilder where he was knocked out in the ninth round.
He was due to face Mariusz Wach in Poland on Friday to mount another charge towards a world title challenge.
While the ban will come as a major blow to Molina, in reality, he has no one else to blame but himself.
Whether we see him in the boxing ring again will be very interesting to note.