Press Release: Fighting in an eight rounder against an opponent to be named, Glenn Donaire, "The Filippine Bomber" will highlight the undercard of "Double Trouble in Tahoe!", the August 5, 2006 world championship doubleheader promoted by Gary Shaw Productions at the MontBleu Resort Casino & Spa in  Lake Tahoe, Nevada.   Headlined by the IBF/IBO bantamweight title rematch between Rafael Marquez  and Silence Mabuza and the Juan Manuel Marquez vs. Terdsak Jandaeng WBO interim featherweight title rumble, Showtime Championship Boxing will televise both world title fights live at 9 p.m. ET (9 p.m. PT, delayed on the west coast.) Donaire, (16-2-1, 9  KOs), from  General  Santos  City returns to the ring after winning a unanimous decision over Cesar Lopez, (18-2, 4 KOs), last May. The undercard will also include undefeated welterweight Arturo Morales, (17-0-1, 6 KOs). Tickets can be purchased at the box office, through TicketMaster, by calling (800) 648-3353 or online.