Photos: Carlos Castro Batters Cesar Juarez For TKO in Four

MGM Grand Conference Center, Las Vegas - Carlos Castro (26-0, 11 KOs) defeated the most notable name of his career, knocking out former world title challenger Cesar Juarez (25-9-1, 19 KOs) after Juarez's corner stopped the one-sided bout following the conclusion of the fourth round.

Juarez has now lost two fights in a row.

In a six-round battle of undefeated junior lightweight prospects, Joshafat Ortiz (8-0, 4 KOs) edged Joshua Orta (6-1, 2 KOs) by majority decision (57-57, 58-56 2x). Ortiz swept the first four rounds on two of the judges' cards.

Nine days after losing his first professional fight, middleweight Donte Stubbs (7-1, 2 KOs) upset the previously unbeaten Fred Wilson Jr. (6-1-2, 2 KOs) by six-round unanimous decision (58-53 2x, 58-54). Stubbs scored knockdowns in the third and fifth rounds, and Wilson had a point deducted for holding in the fourth.

In a scheduled four-round welterweight fight that featured the rare double knockdown, Corey Champion (2-3, 2 KOs) knocked out Peter Cortez (2-2, 1 KO) in the opening round. Champion knocked down Cortez early in the round, then the double knockdown occurred. Champion roared back to stop Cortez in an instant undercard classic.