WBC interim super middleweight champion Lester Martinez will make his first interim title defense against Croatia’s Luka Plantic. Guatemala will be in the house and undefeated 0’s will be on the line on Saturday, August 29th, for Martinez-Plantic, which will be streamed live on ProBoxTV (7:30 PM ET/4:30 PM PT) from Los Angeles From Guatemala City, Martinez (20-0-1 with 16 KOs) and Zagreb's Plantic (13-0 with 10 KOs) will meet in the twelve-round main event. The show will also feature light heavyweight Najee Lopez (16-0 with 13 KOs) taking on Colombian slugger Juan Carrillo (15-0 with 11 KOs).

 

Martinez, age 30, won his interim title in March of this year with a unanimous decision over Immanuwel Aleem in a sold-out event at the Orange Show Events Center in San Bernardino, California. 

 

Plantic, age 29, was last seen in November 2025 winning via over formerly undefeated Shadiri Musa Bwogi. 

 

In his most recent ring appearance, a Puerto Rican from Atlanta, won a battle against Manuel Gallegos in March 2026.

 

A 2016 Olympian, Carrillo was last seen in May scoring a fourth-round knockout over Marlon Delgado on the undercard of the David Benavidez vs. “Zurdo” Ramirez superfight.

 

More supporting matchups, including appearances by popular sluggers Ramon Cardenas, Luis Torres and Weljon Mindoro, plus a full lineup of “Future Stars” series prospects will be announced shortly.