A boxer scored 2 knockdowns but risked disqualification when he bit his opponent for no apparent reason at all

• Nicolas Demario dropped his boxing opponent twice Saturday.
• He then risked disqualification when he bit Josue Vargas near the shoulder.

LAS VEGAS — A boxer scored two knockdowns in a fight Saturday but risked disqualification when he bit his opponent for no apparent reason at all.

It all went down during a historic night in Las Vegas as the city's powerful boxing firm Top Rank brought the first combat sports event to the new Resorts World casino on the strip.

The event was topped by a 10-round lightweight scrap between Namibian boxer Jeremiah Nakathila and the power-punching Mexican fighter Miguel Berchelt, but earlier in the evening there was mayhem.

Nicolas Demario and Josue Vargas fought eight grueling rounds that were high on talking points as there were knockdowns, a flagrant foul that resulted in a point deduction, and a battle that went back-and-forth.

Midway through the fight, having already beaten Vargas to the floor two times, Demario made the bewildering decision to bite him on the upper arm and shoulder area.

Watch it right here:

The 28-year-old was fortunate to escape with a point deduction as opposed to a straight disqualification from the fight, as it could have undone the good work he produced earlier.

The fight was competitive and both combatants perhaps sensed that the scorecards may have been close, as they fought the final rounds — the seventh and eighth — like the win depended on it.

Ultimately, Vargas landed the more significant blows and, despite the knockdowns and point deduction, earned a unanimous decision with scores of 76-74 (twice) and 76-73 from the three ringside judges.

Earlier in the show, budding prospect Haven Brady Jr. advanced his pro record to six wins (four knockouts) as he finished Jose Argel in the fourth round.

The end came here:

Dante Benjamin also showed that he is a young fighter to watch as he displayed defensive prowess and solid punching qualities against Kevin Johnson.

And promising former Olympic boxer Tiger Johnson scored a sweet knockout over Sebastian Chaves, advancing his fledgling record to three wins (two knockouts).