Get caught up with Citizen Bull's past performances, jockey, trainer and full analysis heading into the Run for the Roses

The 151st Kentucky Derby headed to the post Saturday with the prospect of a wet track, an open slot in the starting gate and no firm favorite. Aside from the potential weather, the race shaped up as an entertaining and potentially lucrative wagering opportunity -- and a chance for one or more of the 19 3-year-olds to separage toward eventual stardom.