Watch: Former NFL star earns 17 second KO win in UFC with barrage of knees and punches to rival's head

Greg Hardy is making his transition from NFL to the UFC look flawless after earning his second career win in style with a 17 second knockout.

The former Carolina Panthers and Dallas Cowboys defensive end made his mark in the Dana White Tuesday Night Contender Series in Las Vegas on Wednesday when he obliterated Tebaris Gordon in the first round.

Hardy, who has a history of drug and domestic violence charges, used a flurry of punches and knees to Gordon's head to improve his career record to 2-0.

Since leaving the NFL in 2015, Hardy has had five fights in the octogon which included three amateur bouts before he turned professional - all five have now ended in knockout wins.

UFC President Dana White said he acknowledges Hardy's past but thought the 30-year-old deserved a chance to turn his life around.

"What the guy did was horrible," White said.

"He got off drugs. He got off alcohol. Hit rock bottom. And then, built himself back up.

"He has a second chance here. He turned his life around."

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