Chavez-Vera undercard almost set

• When the Julio Cesar Chavez Jr. got cut training for his super middleweight fight with Brian Vera on Sept. 7 at the Staples Center in Los Angeles, the entire card was postponed. With Chavez-Vera rescheduled for Sept. 28, now at the StubHub Center in Carson, Calif., promtoer Top Rank has rescheduled most of the original undercard bouts to also shift to Sept. 28.

The undercard will include junior lightweight contender Diego Magdaleno against Edgar Riovalle, junior welterweight contender Karim Mayfield (in his first fight since signing with Top Rank) against Pavel Miranda, up-and-coming junior lightweight Jose Felix Jr. (no opponent yet) and middleweight prospect Matt Korobov against former “Contender” winner Grady Brewer. Also on the card in six-round fights are two 2012 Olympians, who are among boxing’s top prospects: American junior welterweight Jose Ramirez and featherweight Oscar Valdez, a two-time Olympian from Mexico.

• Heavyweight contender Tomasz Adamek’s next fight likely will take place Nov. 16 on NBC, Main Events promoter Kathy Duva told ESPN.com. There had been some talk that Adamek (49-2, 29 KOs) might face up-and-comer Bryant Jennings (17-0, 9 KOs), and it could still happen, but not on this card. Duva is also engaged in discussions with HBO about the next fight for newly crowned light heavyweight titleholder Sergey Kovalev (22-0-1, 20 KOs). He will make his first defense on the network before the end of the year, likely in November, but they are still ironing out the exact date and an opponent.

• Top Rank has released five fighters their promotional contracts, according to vice president Carl Moretti: lightweight Mercito Gesta (26-1-1, 14 KOs), welterweight Wale Omotoso (23-1, 19 KOs), junior middleweight Abie Han (19-1, 12 KOs), flyweight Jonathan Gonzalez (13-1, 11 KOs) and junior welterweight Levan Ghvamichava (10-1, 8 KOs). All are coming off defeats.

• In a last-minute addition to it’s schedule, Spanish-language network UniMas has added a card to its “Solo Boxeo Tecate” series and will carry Saturday night’s card from Tapachula, Mexico. The main event is for a vacant interim junior flyweight title between Moises Fuentes (17-1-1, 8 KOs), a former strawweight world titleholder from Mexico, and Colombia’s Luis De La Rosa (22-1-1, 12 KOs). Full titleholder Donnie Nietes (31-1-4, 17 KOs) of the Philippines is sidelined by a cut and will be obligated to face the winner of Saturday’s fight in his return. Nietes and Fuentes fought to a draw in a March title fight in the Philippines.

• Super middleweight titlist Robert Stieglitz (45-3, 26 KOs) of Germany, scheduled to defend his title on Oct. 19 in Leipzig, Germany, now has an opponent. He is due to face Isaac Ekpo (22-1, 16 KOs) of Nigeria. Ekpo is an obscure fighter with no names of note on his record who has never boxed outside of Africa. The undercard is slated to include flyweight titlist Moruti Mthalane (29-2, 20 KOs) of South Africa in a mandatory defense against Spain’s Silvio Olteanu (14-6-1, 6 KOs) in a fight originally scheduled for Sept. 13 but shifted to this card.