The convicted “Grid Kid killer” is taking another shot at clearing his name in the murder of a Connecticut college football star — by renewing his argument that a lead prosecutor suppressed evidence in the case.

John Giuca’s lawyer Mark Bederow filed a new motion late Tuesday night asking Brooklyn Supreme Court Justice Danny Chun to throw out the 35-year-old’s 2005 murder conviction.

Bederow claims jailhouse snitch John Ingram told former Brooklyn prosecutor Anna-Sigga Nicolazzi in a 2005 taped interview that Giuca was innocent in Mark Fisher’s death — and that Antonio Russo, Giuca’s co-defendant, admitted to killing Fisher.

That evidence, Bederow has claimed, was purposely buried by Nicolazzi.

“This is the worst type of Brady violation imaginable: suppressing a sworn statement of the defendant’s actual innocence,” Bederow said in a statement. “To then see the court cite evidence that Giuca disposed of the murder weapon while unaware of suppressed evidence that Russo admitted that he didn’t is profoundly unjust.”

Giuca has been the subject of a complicated, 16-year legal saga since he was implicated in Fairfield University football star Fisher’s death in 2003.

Last year, a state appeals court threw out his conviction, but it was reinstated by the New York Court of Appeals, the state’s highest court, in June.

Bederow was barred from raising claims that Nicolazzi hid the Ingram evidence — so the Court of Appeals never considered it.

Thus, he said, the panel weighed its decision on Giuca’s claims that Nicolazzi promised leniency to another jailhouse snitch, John Avitto, who said Giuca told him he killed Fisher — but later recanted those statements.

Chun previously ruled against ordering a retrial in Giuca’s case. Giuca, who was sentenced to 25 years to life, remains behind bars.

A spokesman from the Brooklyn District Attorney’s office said, “We will review the motion.”

Russo, who was convicted alongside Giuca, has confessed to killing Fisher, who was 19 at the time of his death.

Nicolazzi did not respond to a request for comment.