Koreshkov vs Tibau, Romanov vs Muniz set for June 6 in St. Petersburg

Fight promoter Kamil Gadzhiev has confirmed two welterweight Grand Prix matchups for BetCity Fight Nights 138, scheduled for June 6 in St. Petersburg. Andrey Koreshkov meets Gleison Tibau in one bout, while Sergey Romanov faces Andre Muniz in the other, with both fights forming part of the ongoing welterweight Grand Prix tournament.

Koreshkov, nicknamed "Spartan," carries an impressive 19-2-0 record and stands six feet tall at 35 years old. He is one of the more active strikers in the bracket, landing 2.84 significant strikes per minute at 39 percent accuracy, and adds a persistent grappling threat with 4.8 takedowns per 15 minutes.

Tibau is a seasoned 42-year-old Brazilian southpaw out of American Top Team with a career record of 33-14-0. Standing five-foot-ten with a 71-inch reach, he averages 4.08 takedowns per 15 minutes and has built his reputation as a relentless wrestler across more than four decades of competition.

Muniz, known as "Sergipano," brings a 24-8-0 record and considerable physical tools into his bout with Romanov. The 36-year-old Brazilian southpaw stands six-foot-one with a 78-inch reach and hits 48 percent striking accuracy — among the higher marks in the field — while also averaging nearly four takedowns per 15 minutes and 1.1 submission attempts per 15 minutes, signaling genuine finishing ability on the ground.

Why it matters

• Both bouts carry direct tournament stakes, with winners advancing in the welterweight Grand Prix
• Koreshkov and Tibau present a striker-versus-wrestler dynamic, with both men capable of taking the fight to the mat
• Muniz's submission threat adds an extra layer of danger for Romanov in a matchup that could turn quickly on the ground