From Menominee, Wisconsin, and of Menominee Nation, native, heritage, 36-year-old Oliveira (25-1-1, 20 KOs) is also a former NABF and WBA Fedebol Light Heavyweight Champion.

The promotional agreement is a reunion of sorts, as Grygelko was Oliveira’s promoter for much of his early professional career.

“I used to promote Marcus, prior to him signing with Don King, and it’s truly an honor to be able to promote him again and help position him for another world title shot,” said Tony Grygelko. “It seems that with his previous promoter not actively seeking fights, and his loss to Jurgen Brähmer, that Marcus has been written off, but the truth is he is extremely focused and has a burning desire to show all his fans that he has the talent to win a World Championship! He plans to shake off some ring rust off with a couple fights and then he’ll be looking to go after some of the big names in the division, such as Andrezj Fonfara, Sergey Kovalev, Bernard Hopkins, and a rematch with Brähmer.”

Oliveira, who was a heavily decorated amateur boxer before turning pro in 2006, said he feels his career had been stalled by an agreement he signed with another promoter. He says he happy to now be free of that contract and back to working with someone he trusts.

“I was looking for someone who could get me to the next level in my career and Tony has already done that for quite a few guys, so it was an easy decision,” said Oliveira. “He’s always straight-up with me and treats me well. I have a great relationship with him. I’m very happy about this new direction.”

“We’re very excited to be back working with Tony,” said Oliveira’s Manager, Douglas Ward from the Underground Boxing Company. “It’s good to be working with a promoter that has our same set of goals.”

Oliveira joins a Seconds Out stable that also includes Carson Jones and recent world-title challenger Caleb Truax.