The Kentucky Derby is known for surprises, from past longshots like Donerall and Rich Strike to current contenders at 50-1 odds. The No. 17 post has never produced a winner, but Stronghold will try there at 20-1. Seize the Grey impressed in the Pat Day Mile, enhancing the Blue Grass Stakes field. Chiefs RB Isiah Pacheco and former MLB player Jayson Werth are among the celebs at Churchill Downs.