Sage Northcutt, who became one of the youngest fighters to compete for the UFC, made his promotional debut for ONE Championship Friday at an event entitled Enter the Dragon.  

The 23-year-old Northcutt was knocked out in just 29 second in Kallang, Singapore by veteran Cosmo

Watch below:

The bout served as the co-main event and streamed live on Bleacher Report.

Northcutt had won three consecutive fights between 2017 and 2018 inside the Octagon.

He went 6-2 for the UFC between 2015-18 before his contract expired and he signed with ONE Championship.

Not off to a great start. 

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