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Tyson's promotional company on the rocks

A few notes from around the boxing world:

• Former heavyweight champ Mike Tyson and Garry Jonas, who partnered 17 months ago to found promotional company Iron Mike Productions, are in the midst of a split, according to multiple sources. Tyson and Jonas have had a falling out and are going their separate ways, according to the sources. The Tyson and Jonas camps declined comment to ESPN.com.

Jonas apparently will have some of his fighters begin working with powerful adviser and manager Al Haymon and plans to remain in boxing promotion. Tyson also may remain in the promotional business and it would seem logical that he would retain the name of the company. What will happen to the fighter contracts owned by Iron Mike Productions is unclear, but the company has several fighters on its roster, including exciting welterweight Sammy Vasquez, lightweight Monty Meza Clay, welterweight Felix Diaz (a 2008 Olympic gold medalist) and blue chip prospects Erickson Lubin, a junior middleweight, and Ievgen Khytrov, a middleweight.

• Former three-division titleholder Adrien Broner (29-1, 22 KOs) is penciled in for his next fight on March 7 against an opponent (and television network) to be announced. Broner is coming off a 12-round decision win against Emmanuel Taylor in a junior welterweight bout on Sept. 6. Broner has won two fights in a row since losing his welterweight belt by clear unanimous decision to Marcos Maidana in their action-packed fight in December 2013, after which Broner dropped down to junior welterweight.

• Middleweight contender David Lemieux’s 10th-round knockout of Gabriel Rosado in an action-packed fight on Dec. 6 at the Barclays Center in Brooklyn, New York, averaged 908,000 viewers for Lemieux’s HBO debut. It peaked at 1.161 million. Middleweight Hugo Centeno Jr.’s sensational fifth-round knockout in the middle bout of the tripleheader averaged 750,000 with a peak of 815,000. Welterweight Thomas Dulorme’s hard-fought decision win against Hank Lundy in the opener averaged 672,000 with a peak of 778,000.