# Nikolija Milosevic UFC debut knockout

> Live situation record from CLSTR: https://clstr.news/situations/nikolija-milosevic-ufc-debut-knockout
> Updated: 2026-08-21T06:00:24.000Z. Sources: 2. Developments: 2.

At UFC Belgrade, Serbian bantamweight Nikolija Milosevic secured a first-round knockout victory against American fighter Hailey Cowan. The bout ended after 3 minutes and 41 seconds following a body punch from Milosevic, which earned her a $100,000 performance bonus.

Following the match, Cowan announced her retirement from mixed martial arts, citing her faith as she moves toward a new chapter. Milosevic later reflected on the viral debut, noting that the body strikes were intended as a setup for an overhand right. She attributed her success to a professional support team and is currently preparing for her next fight within the organization.

## Timeline

### 2026-08-21: Nikolija Milosevic reflects on viral UFC debut knockout

Nikolija Milosevic discusses her viral UFC debut knockout of Hailey Cowan, revealing the strike was intended as a setup rather than the finishing blow.

2 sources. https://clstr.news/cluster/nikolija-milosevic-reflects-on-viral-ufc-debut-knockout

### 2026-08-02: Hailey Cowan Retires After Knockout Loss to Nina Milosevic at UFC Belgrade

Hailey Cowan retires after a first‑round knockout by Nina Milosevic at UFC Belgrade, ending a 7‑6 MMA career.

3 sources. https://clstr.news/cluster/hailey-cowan-retires-after-knockout-loss-to-nina-milosevic-at-ufc-belgrade

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Cite as: Nikolija Milosevic UFC debut knockout. CLSTR, https://clstr.news/situations/nikolija-milosevic-ufc-debut-knockout