Tom Aspinall remains promotional-perfect in the co-headlining bout of UFC Vegas 36 tonight — making relatively short work of short-notice replacement, Sergey Spivak — scoring an impressive opening round knockout victory.

Co-headlining UFC Vegas 36 beneath his compatriot, Darren Till, the #13 ranked, Aspinall scored his fourth victory since his transition to the UFC in July of last year.

The Wigan-born technician kept Spivak largely on the outside for the majority of their one round showdown, and punished the Moldovan brutally when he eventually entered range.

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Tying up in the clinch, Aspinall sliced Spivak with a short right-elbow, sending him to the canvas by the Octagon fence, before forcing the issue with a volley of ground strikes — improving to 11-2 professionally.

Below, catch the highlights from Aspinall’s impressive knockout win over Spivak.