Márcio Barbosa delivered a memorable Octagon debut in theUFC Winnipegfeatured prelim on Saturday.

Just past the one-minute mark of the opening round, Buzukja threw a combination that prompted Barbosa to counter with a clean counter left that caught Buzukja clean on the chin and sent him crashing to the canvas.

Official Result: Márcio Barbosa def. Dennis Buzukja via KO (left hook) at 1:20 of Round 1.

With the victory, Barbosa improved his overall record to 18-2 with 15 of those wins by way of knockout. He now has five straight first-round finishes, including a win over Damon Wilson onDana White’s Contender Serieslast year.

MARCIO BARBOSA ONE PUNCH KNOCKOUT!!!📺@paramountpluspic.twitter.com/yo777moCQn

RIGHT. ON. THE. BUTTON.📺@paramountpluspic.twitter.com/bc3DEozrhJ

Source: LowKickMMA.com