The favorite in this year's Kentucky Derby has scratched, according to its trainer.Omaha Beach is out due to a breathing issue, trainer Richard Mandella said Wednesday. It's a heartbreaking disappointment just four days before the run for the roses.Omaha Beach has been the focus of attention at Churchill Downs for the last couple of weeks and was looking great. He had been recovering from a quarter crack in his front left hoof.Mandella said the horse now has what is called "entrapped epiglottis."Click here for an update on post positions맥스카지노�After training this morning we noticed him cough a few times,맥스카지노� Mandella said. 맥스카지노�It caused us to scope him and we found an entrapped epiglottis. We can맥스카지노�t fix it this week so we맥스카지노�ll have to have a procedure done in a few days and probably be out of training for three weeks. We맥스카지노�ll have to figure out a whole new game plan.맥스카지노�The epiglottis is a triangular-shaped cartilage that lies at the base of the airway just in front of the arytenoid cartilages, which cover the airway during swallowing. It is normally located above the soft palate, according to Churchill Downs officials. The good news is that this is not a life- or career-threatening injury, according to 비바카지노 Viva's Fred Cowgill.Mandella is a Hall of Fame trainer who has dreamed of winning the derby since he was in school. This might have been his last chance to do it.Mandella will meet with media at 8 a.m. Thursday to discuss the issue.With the scratch of Omaha Beach, Bodexpress will draw into the field and break from post position 20. All horses outside of Omaha Beach (post positions 13-20) will move over one position in the starting gate. This will dramatically change the pace scenario.Florida Derby winner Maximum Security now has a better chance of winning the race on or near the lead with few up front to challenge him and keep the pace honest.