Marino, who will be broadcasting this Sunday's Super Bowl in New Orleans for CBS, reportedly got Donna Savattere, a then 35-year-old production assistant at CBS Sports' Manhattan studio, pregnant, according to an exclusive story in The New York Post. She gave birth in June, 2005.
"They had an affair, and she had a baby," said a source. "Everything was on the down-low and secretive."
At the time of the affair, the ex-Miami Dolphins quarterback was married to his wife, Claire, for 20 years.
The 51-year-old Marino agreed to pay Savattere millions to care for the child named Chloe, said sources. She moved to Texas as part of the deal. It was not disclosed exactly how much he paid but Savattere has apparently been living large and was a fixture on the Hamptons social scene, said The Post.
Yesterday, Marino — who has six kids with his wife — owned up to the dalliance.
"This is a personal and private matter. I take full responsibility both personally and financially for my actions now as I did then," Marino told Page Six of The Post. "We mutually agreed to keep our arrangement private to protect all parties."
Marino said the marriage was still intact, despite the the affair and baby.
"My wife and I have been married for almost 30 years and have six children together," he wrote yesterday — which happens to be their 28th wedding anniversary.
Sources said Marino was in touch with the 7-year-old Chloe.
"They would have impromptu meetings, as was part of the deal," a source said.
Savattere later married Nahill Younis, whom she met in 2009.
The birth of the baby Chloe came about two months before Marino was inducted into the Hall of Fame — where his son Daniel paid a moving tribute to his father.
Marino, a pre-game analyst with CBS since 2003, will be doing the Super Bowl broadcast this Sunday.