As reported earlier this week, former middleweight world champion Julio Cesar Chavez Jr. was temporarily suspended by the Nevada State Athletic Commission for declining to take part in a random drug test.

Last week, an agent from the Voluntary Anti-Doping Association surprised Chavez Jr. at the Wild Card Boxing Club in California, where the Mexican boxer had been working with Hall of Fame trainer Freddie Roach.

Chavez Jr. declined to submit himself to a test.

Once VADA informed the NSAC, they temporarily suspended him. The boxer is now required to appear before the NSAC at a hearing set down November 20.

The incident has now put his planned bout with Daniel Jacobs in jeopardy. The contest was being targeted for a date of December 20 at the MGM Grand in Las Vegas.

Chavez confirms that a VADA agent had indeed visited the gym - but he claims the tester failed to show any credentials to confirm their identity.

"I have nothing to hide. I'm ready for any test," Chavez told ESPN Deportes.

"The anti-doping guy came here [to the Wild Card] angry. He did not show any credentials as they are supposed to do. Any day I can do the test if they guarantee me it's the same way for Jacobs. I don't understand because I have nothing official for the fight."

Chavez returned to the ring back in August, when he scored a first round knockout in Mexico. It was his first bout since being dominated over twelve rounds by Canelo Alvarez in May of 2017.

If the NSAC refuse to lift Chavez's suspension, then the backup plan would see Jacobs face Gabe Rosado (24-12-1, 14 KOs), who is 1-3-1 in his past five bouts. He last fought in March and lost a decision to middleweight contender Maciej Sulecki.

Jacobs (35-3, 29 KOs), who plans to make his super middleweight debut in the fight, last fought in May when he lost a twelve round unanimous decision to Canelo.