The undercard of the headline bout between Vito Mielnicki Jr and Omar Huerta is taking shape in Atlantic City on April 11.

The show, at the Adrian Phillips Theater at Jim Whelan Boardwalk Hall, will see heavy-handed Dominican Heidan Martinez Morillo make his US debut against Daiyaan Butt on ProBox TV.

Martinez, still only 21, is 17-0 (17 KOs) while experienced Philadelphian Butt is 20-3 (10 KOs).

Butt, a year older, has been victorious in 10 of his last 11 fights since 2022, dropping an eight-round decision last time out.

In another 10-rounder, impressive Cuban Yan Marcos, 14-0 (10 KOs), fighting out of Miami via Havana, faces 11-0 (10 KOs) New Jersey man Dwyke Flemmings Jnr at 154lbs.

There is also a slot on the bill for 19-0 (8 KOs) Mexican flyweight Erick Badillo, who is presently ranked by the WBO, WBC and the IBF.

The card is presented by Sampson Boxing in association with Paco Presents and ProBox TV and the main event sees the popular Mielnicki Jnr, 22-1 (13 KOs), of Roseland, New Jersey, up against 15-0-1 (13 KOs) Huerta, who fights of San Ysidro, California via Tijuana.