Sources: Canelo Alvarez finalizing fight vs. Edgar Berlanga

Canelo Alvarez, boxing's top star, is in the process of finalizing a deal for a super middleweight championship defense vs. Edgar Berlanga on Sept. 14 at T-Mobile Arena in Las Vegas, sources told ESPN on Tuesday.

Mexico's Alvarez (61-2-2, 39 KOs) is the undisputed champion at 168 pounds, but it's possible the IBF title won't be on the line as his mandatory defense is overdue, sources said. Canelo-Berlanga will go head-to-head with UFC 306 -- the first sporting event to be held at the Sphere, a revolutionary venue that opened in Las Vegas last September.

Alvarez, 34, is ESPN's No. 5 pound-for-pound boxer. The all-time great has also collected titles at 154, 160 and 175 pounds. He hasn't scored a knockout since his win over Caleb Plant in November 2021, but he has scored knockdowns in each of his last three victories.

He's won four consecutive bouts since a decision defeat to Dmitry Bivol at light heavyweight in May 2022.

Alvarez will be installed as a major favorite against Berlanga, who has never challenged for a world title nor competed on the world-class level.

Berlanga (22-0, 17 KOs) is a 27-year-old from Brooklyn, New York, of Puerto Rican descent. He is coming off a sixth-round KO of Padraig McCrory in February. The brash fighter started his career with 16 first-round KOs, but his next five opponents lasted the distance as his competition stiffened.

Mexican Independence Day weekend has long been one of two holidays reserved for Alvarez (along with Cinco De Mayo weekend), a tradition that was held by Floyd Mayweather and Oscar De La Hoya before him.

Alvarez missed his preferred Mexican Independence Day weekend fight last year when he defeated Jermell Charlo in late September, but now returns to the holiday he has headlined six times.

PBC will lead the event on Prime Video PPV with Matchroom Boxing involved as Berlanga's promoter, sources said. The PPV will also be available on DAZN, Matchroom's streaming partner.

It will be Canelo's third consecutive fight with PBC.