Press Release: The remnants of what was supposed to be the Vitali Klitschko vs. Hasim Rahman pay-per-view card was held in Las Vegas on Saturday.  Top Rank got two of their prospects some work: heavyweight  Victor Bisbal, 4-0, of Puerto Rico stopped Bridger Bercier in the fifth round and 2004 Olympian Vanes Martirosyan of California stopped Abdias Castillo also in the fifth round at the Wynn Las Vegas Casino. Martirosyan, fighting at junior middle, improved to 6-0.