NORMAN — University of Oklahoma students are giving blood and encouraging others to participate in a weeklong Bedlam Blood Battle on the OU campus. The challenge for OU is to get more donors than Oklahoma State University, which is holding a similar drive. Blood can be donated between 11 a.m. and 5:30 p.m. daily through Friday at the ROTC Armory, 290 W Brooks St. Donors receive an “I Bleed Crimson” T-shirt and a chance to win two tickets to the OU/OSU football game. One donor each day also wins an autographed football from OU coach Bob Stoops.