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John Yannis scores first-round KO over Jamie Siraj in UFC debut win

By Oscar Nascimento
Updated AgentMMA.com
Quick read

John Yannis knocked out Jamie Siraj in the first round at UFC Winnipeg. This marks Yannis's first victory in the UFC after losing his promotional debut, bringing his record to 10-4. For Siraj, who holds a 14-4 record, this was his first fight in the UFC and resulted in a debut loss. The knockout finish came early in the opening round. Both fighters were competing at UFC Winnipeg.

AgentMMA.com

John Yannis rebounded from his promotional debut defeat with a first-round knockout of Jamie Siraj at UFC Winnipeg on April 18, 2026, securing his first victory inside the Octagon.

Yannis, now 10-4, entered the bout looking to get back on track after dropping his initial UFC appearance. The 31-year-old southpaw stands five-foot-seven with a 70-inch reach and competes in a division where finishing power can quickly change a fighter's trajectory. The early stoppage demonstrated that Yannis still carries the kind of knockout threat that built his record over a professional career spanning 14 fights.

John Yannis
John Yannis

Siraj arrived at UFC Winnipeg with a 14-4 record and the experience of a seasoned veteran, but the debuting fighter was unable to weather the pressure Yannis applied in the opening minutes. The finish came early in round one, sending Siraj to his first loss under the UFC banner in his promotional debut.

Why it matters

  • Yannis erases the sting of his first UFC loss and demonstrates he belongs on the roster with a decisive finish.
  • Siraj absorbs a debut defeat despite carrying one of the stronger records among newcomers to the promotion.
  • An early knockout keeps Yannis in contention for a meaningful next booking and signals he can finish opponents at this level.
Source: AgentMMA

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