Tim Layden: Preakness is Big Brown's race to lose
May 17, 2008 - BALTIMORE -- Big Brown arrived Wednesday evening at Pimlico Race Track for Saturday's Preakness. He was preceded onto the grounds of the old track by two of his business partners: In front of his horse trailer a brown UPS delivery truck of the variety that is probably driving up your street right now, and behind it a UPS cab for pulling an 18-wheeled truck. I didn't see the guy with the squeaky…