Officials have announced plans for World Series of Fighting 19, as lightweight champion Justin Gaethje will defend his title against Luis Palomino.

Set for March 28 from Phoenix and the Comerica Theater, the main card will air on NBC Sports Network at 9 p.m. ET. Along with Gaethje-Palomino, the semifinals in the light heavyweight tournament will take place.

Thiago Silva, a former UFC contender, will meet Ronny Markes in one semifinal, while Matt Hamill competes in the other. The fourth entrant is set to be announced soon.

Gaethje (13-0) has earned wins over the likes of Nick Newell, Gesias Cavalcante and Dan Lauzon since turning pro, while Palomino (23-9) owns 15 finishes in his career.

Below is the current lineup:

WSOF Lightweight Championship
Justin Gaethje (c) vs. Luis Palomino

WSOF Light Heavyweight Tournament Semifinal
Thiago Silva vs. Ronny Markes

WSOF Light Heavyweight Tournament Semifinal
Matt Hamill vs. TBA