Two-time world champion Jose Luis Castillo of Mexico will have his Media Day and will work out at the Top Rank gym in Las Vegas on Tuesday, noontime. Castillo will talk about his upcoming battle with world lightweight champion Diego 'Chico' Corrales which is scheduled this coming Saturday at the Thomas and Mack Center, Las Vegas.  Castillo and Corrales have both promised victory. For weeks, Castillo has trained in Mexico. He took a private jet today (Monday) to get into Las Vegas. Corrales will have his Media Day on Wednesday, noontime, at the nearby IBA Gym in Las Vegas. The final press conference is scheduled for this Thursday, 11:30 am in the Palace Ballroom at Caesars Palace.  Corrales vs. Castillo III is co-promoted by Top Rank and Gary Shaw Productions in association with Caesars Palace and Wynn Las Vegas. Corrales vs. Castillo III will be broadcast on Showtime. Castillo's Tuesday workout in Las Vegas will be at the Top Rank gym, 3041 Business Lane - the gym phone is (702) 739-1501.  Christina Kwan, whose parents were born in China, will open Media Day at 11 am. She is making her professional debut on Corrales vs. Castillo III.