Photos: Shakur Stevenson, Mike Alvarado, Adames Get KO Wins

Viorel Simion had never been knocked down as a professional. Featherweight sensation Shakur Stevenson changed all of that in a hurry, knocking Simion down three times en route to a first-round TKO in the scheduled 10-round co-feature. Stevenson (9-0, 5 KOs), a 2016 U.S. Olympic silver medalist, finished off Simion (21-3, 9 KOs) with a trio of devastating right hooks. (photos by Mikey Williams).

Vacant NABF Super Welterweight Title: Carlos Adames (15-0, 12 KOs), TKO2, 2:17, Joshua Conley (14-3-1, 9 KOs). Adames scored three knockdowns in the second round.

Vacant NABF Super Featherweight Title: Mikaela Mayer (8-0, 4 KOs), unanimous decision, eight rounds, Vanessa Bradford (4-1-2, 0 KOs). Scores: 80-71 3X.

Light Heavyweights: Steve Nelson (12-0  10 KOs), TKO4, Oscar Riojas (17-11-1, 6 KOs).

Welterweights: Mike Alvarado (40-4, 28 KOs), KO2, Robbie Cannon (16-14-3, 7 KOs).

Lightweights: Ismail Muwendo (20-1, 12 KOs), unanimous decision, 6 rounds, Andrew Wilson (15-12-1, 12 KOs). Scores: 59-55 3X.

Super Featherweights: Jose Valenzuela (2-0, 0 KOs), unanimous decision, 4 rounds, Hugo Rodriguez (1-1, 1 KO). Scores: 40-33 2X, 40-35.

Welterweights: Keeshawn Williams (4-0-1, 1 KO), unanimous decision, 4 rounds, Ramel Snegur (2-3-1, 1 KO). Scores: 40-36 2X, 39-37.