SAN ANTONIO – Austin “Ammo” Williams was immeasurably more impressive Saturday night than the last time he fought.

Houston’s Williams became the first opponent to knock out Isiah Jones when he stopped the usually durable Detroit native in the first round of their scheduled six-round middleweight match at Alamodome. The powerful 160-pound prospect hurt Jones with a left hand 1:15 into the opening round and immediately pounced on Jones once Jones backed into the ropes.

Williams (7-0, 6 KOs) unleashed a ferocious flurry of punches on his disoriented opponent, including a three-punch combination to the body and another hard left up top. Referee Mark Calo-oy had little choice but to step between them and halt the action at 1:29 of the first round on the Canelo Alvarez-Callum Smith undercard.

Williams stopped Mexico’s Esau Herrera in the fifth round of his last fight, but he labored at times to get rid of Herrera (19-12-1, 8 KOs). The 36-year-old Herrera had been stopped in four of his previous six fights before facing Williams on October 23 in Mexico City.

The 26-year-old Jones (9-4, 3 KOs), who did not go down against Williams, fought for the fourth time in the past six months. 

Keith Idec is a senior writer/columnist for He can be reached on Twitter @Idecboxing.