Watch UFC’s all-time biggest upsets, including Holly Holm’s iconic head kick knockout of Ronda Rousey

All through the practically three-decades of the UFC, there have been a handful of unforgettable and stunning upsets contained in the octagon.

On Friday, the UFC launched a video on their YouTube channel highlighting the fights that surprised the MMA world, which features a slew of UFC world title adjustments.

The video kicks off with, greater than seemingly, probably the most stunning outcome within the historical past of the promotion, as Georges St-Pierre defended the welterweight championship in opposition to Matt Serra — who earned his alternative coming off of The Final Fighter actuality present. Regardless of no one giving the practically +900 underdog an opportunity, Serra grew to become world champ with an unbelievable first-round knockout in the primary occasion of UFC 69 in April 2007.

Moreover, the upset highlight-reel included the +830 underdog Holly Holm delivering one of many UFC’s most legendary knockouts as she stopped Ronda Rousey with a vicious head kick to win the ladies’s bantamweight title at UFC 193 in November 2015.

Try the total slate of unbelievable upsets within the video above.