Koreshkov vs Thibau and Romanov vs Muniz set for Fight Nights June 6

BetCity Fight Nights 138, set for June 6 in Saint Petersburg, will feature two welterweight Grand Prix bouts after promoter Kamil Gadzhiev confirmed the matchups. Andrey Koreshkov will face Gleison Tibau, while Sergey Romanov takes on Andre Muniz in what shapes up as a significant night for the Russian promotion's ongoing welterweight tournament.

Koreshkov, nicknamed "Spartan," carries an impressive 19-2-0 record into the fight at 35 years old. The six-foot welterweight is one of the more active strikers in the division, landing 2.84 significant strikes per minute with 39 percent accuracy, and also poses a grappling threat with 4.8 takedowns per 15 minutes.

His opponent Tibau is a 42-year-old Brazilian southpaw out of American Top Team with a 33-14-0 record and a career built heavily on wrestling. The five-foot-ten veteran averages 4.08 takedowns per 15 minutes and has made a career of grinding opponents with his grappling game, though his striking output sits at 1.95 significant strikes per minute.

In the second Grand Prix contest, Romanov meets Andre "Sergipano" Muniz, a 36-year-old Brazilian southpaw who stands six-foot-one with a 78-inch reach and holds a 24-8-0 record. Muniz is a well-rounded threat, connecting at 48 percent striking accuracy while also averaging nearly four takedowns per 15 minutes and 1.1 submission attempts in the same span.

Why it matters

• Both bouts are official Grand Prix tournament matches, meaning wins carry direct advancement implications
• Koreshkov's elite takedown volume against Tibau's wrestling-first style sets up a compelling grappling chess match
• Muniz brings submission danger and striking efficiency that will test Romanov across multiple areas of the fight