Gary Russell Jr., left, defeated Joseph "JoJo" Diaz Jr. in May to retain his featherweight title.
It's one Diaz really wanted, but by not making weight on Friday, Diaz won't be able to win the title when he faces Jesus Rojas, who owns a secondary featherweight belt, Saturday (Facebook Watch, 9 p.m.
Golden Boy president Eric Gomez
Golden Boy president Eric Gomez said that even though Diaz lost to Russell, he was proud of his performance and believes the loss will make him better.
"It's gonna open a lot of doors for me to fight elite fighters at the top in the division, and that's what is the main goal.