GOOD Morning America's Sam Champion issued a blistering warning on Friday as he braced viewers for a tense on-air "throw down."

The GMA weatherman said co-star Michael Strahan and telly chef Marcus Samuelsson were "sharpening knives" as they vowed to go head-to-head in a cook off.

Sam Champion and Heather O'Rourke judged ABC's Great Eyewitness News Holiday Cook-off with Marcus Samuelsson on Saturday.

They saw news anchors Shirleen Allicot and Ken Rosato go head-to-head in a fierce kitchen battle - but special guest Samuelsson said it was former football star Strahan he wanted to challenge next.

Speaking from his judges table, the star chef said: "I would like to call up Michael Strahan on GMA we're going to have a competition you all would like to battle.

"I bring my crew up against your crew any time. How about that?"

Read More Entertainment

Champion chimed in: "I like this, I think it's another show."

And Marcus added: "We know where you live Michael."

Responding to the on-air call moments later, Strahan said: "I'm up for a challenge.

"Marcus is a good friend of mine and my door is always open.

Most read in Entertainment

"And after we have a cook off, I challenge him to a game of football.

"How about that? That's equal in our skills."

The crew were left in stitches by the threats - and it's not yet clear whether a date will be set to make the challenge official.

Sharing a clip of the fierce game talk, Sam Champion tweeted: "UH OH!! @michaelstrahan and @MarcusCooks are now sharpening knives for the #greateyewitnessnewscookoff.

"Watch #1 tomorrow 9:30 am @ABC7NY."

ncG1vNJzZmivp6x7tbTEZqqupl6YvK57xKernqqklravucSnq2huaWmGcn2XaJ6op5RiurC%2BzaKloGWRorKztcKaZKyZnWKwqa3MqaCopl2itqS0wJ6jZqukp66prc1mqqGZoqWyr3nKp6CvnaNk