When is Eduardo Nunez vs. Christopher Diaz?

Eduardo Nunez vs. Christopher Diaz is on Saturday, September 6. The broadcast will begin at 9 p.m. Eastern Time (2 a.m. BST). 

Eduardo Nunez vs. Christopher Diaz will stream on DAZN.

Where is Eduardo Nunez vs. Christopher Diaz?

The fight is taking place in Los Mochis, Mexico.

Who is Eduardo Nunez?

Eduardo “Sugar” Nunez, 28-1 (27 KOs), won the vacant IBF junior lightweight title in May, when he traveled to Japan and outpointed the 16-1 Masanori Rikiishi. For his first defense, the 28-year-old Nunez will headline in his hometown of Los Mochis, Mexico.

Nunez has now won 18 in a row since suffering his lone loss in 2018 in what was his 11th pro fight, losing by one point on all three scorecards against the 9-2-2 Hiram Gallardo. Until the Rikiishi fight, all of Nunez’s victories had come by way of KO or TKO, including a second-round knockout of the 18-0 Jesus Martin Ceyca, a two-round stoppage of faded former featherweight title challenger Oscar Escandon, and a TKO of former title challenger Miguel Marriaga after six rounds in August 2024.

On paper, this fight with Diaz isn’t a step up or even a parallel move in terms of level of opposition. Then again, it isn’t intended to be. This night is meant to be a victory lap for Nunez to entertain for as long as the fight lasts.

Who is Christopher Diaz?

Diaz, 30-5 (19 KOs), is ranked 15th by the IBF. The 30-year-old Florida resident has lost every time he’s stepped up against certain tiers, including in two previous title bouts.

Diaz earned his first shot at a world title in 2018 following TKO victories over the 18-2 Bryant Cruz and the 19-2 Braulio Rodriguez. The vacant WBO junior lightweight belt was on the line in the wake of Vasiliy Lomachenko’s departure for 135lbs. But Diaz fell short, dropping a unanimous decision to Masayuki Ito. Diaz dropped down to featherweight, won a confidence-builder and then was widely outpointed by Shakur Stevenson in a non-title affair.

Diaz bounced back with a pair of victories in 2020 and then got his second chance, challenging Emanuel Navarrete for the WBO title at 126lbs in April 2021. Diaz was game, but Navarrete was well ahead when he stopped “Pitufo” in the 12th round. Another loss immediately followed, this one by majority decision against Isaac Dogboe in November 2021.

Diaz moved back to 130lbs and has gone 4-1 since then, notching three victories before a unanimous decision loss to the 19-0 Henry Lebron last December. In Diaz’s most recent outing, he took an eight-round decision in April over the 9-10 Jose Antonio Meza.

What other fights are on the undercard of Eduardo Nunez vs. Christopher Diaz?

On the undercard, former 108-pound titleholder Pedro Guevara is back for the second time since last November’s three-round blowout loss to junior bantamweight champion Jesse “Bam” Rodriguez. Guevara won a 10-round decision in March against the 13-12-1 Jose Armando Valdes Bernal, moving to 43-5-1 (22 KOs). 

Guevara will face former junior flyweight titleholder Adrian Curiel, 26-6-1 (5 KOs). Curiel won the IBF belt at 108lbs in November 2023 with a second-round KO of Sivenathi Nontshinga. But Curiel’s reign didn’t last long; Nontshinga stopped him in the 10th round of their immediate rematch in February 2024. That was followed by Curiel moving up to flyweight and dropping a technical decision to former titleholder Sunny Edwards in June 2024. Since then, Curiel added a pair of triumphs against opponents with records of 6-2 and 8-2-2.

Guevara-Curiel is listed as a junior bantamweight bout.

The full list of undercard fights can be seen on BoxRec.

David Greisman, who has covered boxing since 2004, is on Twitter @FightingWords2. David’s book, “Fighting Words: The Heart and Heartbreak of Boxing,” is available on Amazon.