Carson City's Miguel Angel Ruiz was a last-minute addition to today's Felix Trinidad-David Reid undercard in Las Vegas.
According to manager Steve Reynolds of Carson City, Ruiz (24-6-2, 13 KOs) will face NABA champion Felix Flores (14-1, 8 KOs) of Puerto Rico.
The junior welterweight title bout is slated to be the card's first fight. Ruiz was added on Thursday after Flores' original opponent failed the physical.
Flores and Ruiz are stablemates, and the fight is scheduled for 12 rounds.
The entire card is being shown on Pay-Per-View, with a 6 p.m. start time.