Kamil Gadzhiev announced two welterweight Grand Prix bouts for Fight Nights 138 on June 6 in Saint Petersburg. Veteran Andrey Korreshkov will face Gleison Tibau in one semifinal matchup. In the other bout, Sergey Romanov takes on Andre Muniz. Both fights are part of the organization's welterweight Grand Prix tournament. The event will be held in Russia's second-largest city. These matchups feature experienced fighters competing for advancement in the tournament bracket.
Fight Nights 138 takes shape with a pair of welterweight Grand Prix semifinal bouts announced for June 6 in Saint Petersburg, Russia. Promotion head Kamil Gadzhiev confirmed that Andrey Korreshkov will meet Gleison Tibau in one half of the bracket, while Sergey Romanov squares off with Andre Muniz in the other.

Tibau, 42, brings a career record of 33-14 to the Grand Prix. The Brazilian southpaw out of American Top Team stands five-foot-ten with a 71-inch reach and has long been one of the more persistent grappling threats in the sport, averaging over four takedowns per 15 minutes across his career. His striking volume sits at 1.95 significant strikes per minute, though his 31 percent striking accuracy reflects a more wrestling-oriented approach.
Muniz, known as "Sergipano," is a 36-year-old Brazilian from the Tata Fight Team Montes Claros. He carries a 24-8 record into the tournament and presents a well-rounded threat at six-foot-one with a 78-inch reach. The southpaw lands 2.08 significant strikes per minute at a sharp 48 percent accuracy and adds nearly four takedowns per 15 minutes alongside 1.1 submission attempts in the same span, making him one of the more complete fighters in the field.

Why it matters
- Both bouts are Grand Prix semifinals, meaning winners advance directly in the welterweight tournament bracket
- Tibau and Muniz are both Brazilian southpaws bringing heavy grappling credentials, setting up contrasting stylistic tests for their respective opponents
- The event takes place in Saint Petersburg, giving the Russian-based promotion a high-profile domestic card around established international names










