The prelims for the Errol Spence Jr. vs. Shawn Porter title fight are coming together, and they will feature three-time world champion Robert "The Ghost" Guerrero.
Guerrero (35-6-1, 20 KOs) will fight Jerry Thomas (14-1-1, 8 KOs) on the early card of the Spence-Porter pay-per-view, which will take place Sept. 28 at Staples Center in Los Angeles.
"It feels great to be back in the ring, especially fighting in front of my fans at Staples Center,'' said Guerrero. "I had a couple tuneup fights and now I'm stepping up in competition. My boxing skills will be on display and I'm ready to take that next step to a big fight.
"I'm in great shape and I'm ready to let my hands go."
The 36-year-old Guerrero is from Gilroy, Calif., and he will be using the fight to help support victims of the July mass shooting at the city's annual Garlic Festival.
"I'm dedicating this fight to the victims of the Gilroy mass shooting and I'll be donating a portion of my purse to their fund," Guerrero said.
The card will also feature 19-year-old super welterweight prospect Joey Spencer, who is 8-0 with six KOs.
"I just want to keep becoming a better pro each time I get in the ring. This experience is a big part of it," said Spencer. "I'm looking forward to showing people what I can do, one fight at a time."
Spencer's opponent has not been announced.
Spence and Porter will fight for the unified welterweight championship, with the winner expected to face Manny Pacquiao.