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

Promoter Kamil Gadzhiev has confirmed two welterweight Grand Prix bouts for Betcity Fight Nights 138, scheduled for June 6 in St. Petersburg. Andrey Korreshkov meets Gleison Tibau in one contest, while Sergey Romanov takes on Andre Muniz in the other, with both fights forming part of an ongoing welterweight tournament.

Gleison Tibau, the 42-year-old Brazilian southpaw out of American Top Team, carries a professional record of 33-14. Standing five-foot-ten with a 71-inch reach, the veteran is a persistent grappling threat, averaging 4.08 takedowns per 15 minutes across his career. He will look to impose that wrestling-heavy style as he steps into the Grand Prix bracket opposite Korreshkov.

Andre Muniz, nicknamed Sergipano, represents Brazil as well and enters at 24-8. The 36-year-old southpaw is notably larger for the welterweight division, listed at six-foot-one with a 78-inch reach of 198 centimeters. Training out of Tata Fight Team Montes Claros, Muniz posts a striking accuracy of 48 percent along with 3.98 takedowns per 15 minutes and 1.1 submission attempts per 15 minutes, making him a well-rounded threat on the mat and on the feet. He squares off against Romanov in the second Grand Prix pairing on the card.

Why it matters

• Both bouts carry direct tournament implications, with winners advancing in the welterweight Grand Prix bracket.
• Tibau's elite takedown volume sets up a compelling grappling dynamic against Korreshkov.
• Muniz's combination of reach advantage, striking accuracy, and submission activity makes him a significant stylistic test for Romanov.
• The June 6 card in St. Petersburg shapes the welterweight landscape in Russian MMA promotion.