The pair will fight at the Crypto.com Arena in Los Angeles, California, with the 43-year-old Ortiz a perennial fixture in the heavyweight rankings.

The Cuban stopped Charles Martin in the sixth round back on New Year's Day at the end of last year, while Ruiz most recently defeated Chris Arreola in May of 2021.

The winner will hope to be in contention  for a title fight once the four belts fragment should the Oleksandr Usyk vs. Tyson Fury fight go ahead in the coming months.

Here is everything you need to know about Andy Ruiz Jr. vs. Luis Ortiz.

When is the Andy Ruiz Jr. vs. Luis Ortiz on Sunday?

Date: Sunday, Sept. 4  
Main card: 9 p.m. ET / 2 a.m. GMT   
Main event ringwalks (approx): 12 a.m. ET / 5 a.m. GMT

The main card is set to get underway at 9 p.m. ET / 2 a.m. GMT with the main event ringwalks scheduled for 12 a.m. ET / 5 a.m. GMT. With live fight nights, these timings could change. 

What channel/stream is Ruiz vs. Ortiz on Sunday?

U.S.: Fox Sports PPV (Price: $74.99) 
UK: FITE.TV

Fox Sports PPV will air the fight in the U.S. where fans will have to pay $74.99 to watch the fight. For the UK, the card will be shown on FITE.TV.  

Where is the Ruiz vs. Ortiz fight on Sunday?

The fight takes place at the Crypto.com Arena in Los Angeles.

Andy Ruiz Jr. record and bio

• Nationality: American 
• Born: September 11, 1989
• Height: 6-0   
• Reach: 74 inches   
• Total Fights: 36   
• Record: 34-2 (22 KOs)  

Luis Ortiz record and bio

• Nationality: Cuban
• Date of Birth: March 29, 1979
• Height: 6-4   
• Reach: 78 inches  
• Total Fights: 37
• Record: 33-2-2 (28 KOs)

Andy Ruiz Jr. vs. Luis Ortiz fight card

(Listed in reverse running order: Ruiz Jr. vs. Ortiz, listed at the top, will go on last)

• Andy Ruiz Jr. vs. Luis Ortiz; WBC Heavyweight Eliminator
• Isaac Cruz vs. Eduardo Ramirez; WBC Lightweight Eliminator
• Abner Mares vs. Miguel Flores; Lightweights
• Jose Valenzuela vs. Jezreel Corrales; Lightweights