Four flyweights will take to the Octagon this May at UFC Fight Night 40, officials announced Friday.

Kyoji Horiguchi faces Darrell Montague and Chris Cariaso squares off with Louis Smolka.

The event takes place May 10 from Cincinnati’s U.S. Bank Arena. No main event has been announced yet.

Horiguchi (12-1) won his Octagon debut over Dustin Pague for his sixth straight victory overall. The former Shooto champion has finished each of his last two foes.

Montague (13-3) was a former Tachi Palace Fights champion before coming over to the UFC. He had his four-fight win streak snapped by John Dodson in his Octagon debut.

Cariaso (16-5) has won three of his five UFC flyweight bouts, including two straight. Smolka (7-0) also won his UFC debut earlier this year, scoring a decision over Alptekin Ozkilic.

Below is the complete list of announced fights to date:

Heavyweight: Soa Palelei vs. Ruan Potts

Lightweight: Justin Salas vs. Ben Wall

Middleweight: Ed Herman vs. Rafael Natal

Featherweight: Nik Lentz vs. Manny Gamburyan

Flyweight: Kyoji Horiguchi vs. Darrell Montague

Flyweight: Chris Cariaso vs. Louis Smolka