By Mark Vester

On the undercard to Bernard Hopkins-Joe Calzaghe at the Thomas & Mack Center in Las Vegas, junior welterweight prospect Danny Garcia (5-0, 5KOs) destroyed Guadalupe Diaz (4-3-1, 1KOs). Garcia is slated to return to action on the June 7 undercard to Kelly Pavlik-Gary Lockett at the Boardwalk Hall in Atlantic City.

Also on the undercard,

Middleweight prospect Danny Jacobs (5-0, 5KOs) had the longest bout of his short pro career when it took him four-rounds to stop Leshon Sims (5-8, 3KOs). Jacobs dropped Sims in the third and fourth.

Lightweight Hylon Williams (1-0, 0KOs), 17-years-old, made his pro debut with a four-round unanimous decision over Marcos Mendias (0-2, 0KOs). Williams was an excellent amateur star, winning numerous titles and compiled a record of 145-20. He is also slated to fight again on the undercard to Pavlik-Lockett on June 7.