Put a stake in it: The partnership between the self-described “Best Steakhouse in New York City” and the “World’s Most Famous Arena” is a bloody mess, according to court papers.

Madison Square Garden said Uncle Jack’s Steakhouse signed on as a sponsor in 2015, even getting naming rights to a steak-sandwich stand on the arena’s concourse.

But after making a couple of payments on the three-year deal, owner Willie Degel stopped paying, MSG claims in a Manhattan Supreme Court lawsuit.

Degel, 49, who stars in the Food Network’s “Restaurant Stakeout,” owes the Garden $207,500, MSG charges.

The Queens native excitedly promoted his sandwich in a 2015 YouTube video filmed at MSG, in which he surprised a suite full of sports fans with what he dubbed “The Willie Degel steak sandwich bomb.”

Degel claims the Garden didn’t hold up its end of their deal.

“Madison Square Garden management failed to deliver some of the things we were promised when we signed the contract. I love Madison Square Garden, but . . . they didn’t fulfill their end of the bargain,” he said.

“Uncle Jack’s Steakhouse purchased and used sponsorship assets and has refused to pay, leaving us with no choice but to use legal action to collect what they owe,” MSG said in a statement.