One of the top horses to watch in Saturday’s Kentucky Derby is a race day scratch. The Puma will be out of the popular horse race after trainer Gustabo Delgado confirmed swelling was discovered in the horse’s leg due to a skin infection. “It’s just really bad timing,” Delgado told Churchill Downs’ Kevin Kerstein. An alternate will not take The Puma’s place in the starting gate as the deadline for eligible entries has passed. Barring no other last-minute scratches, there will be 19 horses in the field for the derby, which is set for a 6:57 p.m. start time. Kentucky Derby entrant The Puma works out at Churchill Downs Friday, May 1, 2026, in Louisville, Ky. AP The Puma is the fifth horse to be scratched from the Derby since week’s draw, joining Right to Party, Silent Tactic, Fulleffort and Corona de Oro. It marks the sixth time in the last eight years that the Kentucky Derby has less than 20 horses participating in the race.…