PHOTO COLLECTION: Kentucky Derby

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A horse comes off the track after a workout at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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Horses pass as they leave and go to the track for a workout at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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Kentucky Derby hopefuls work out led by Japanese horse Admire Daytona, front, at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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Kentucky Derby hopeful Admire Daytona works out at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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Exercise rider Erick Garcia puts up tack ourside the barn holding Kentucky Derby entrant Citizen Bull after a workout at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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CORRECTS ID TO BILL MOTT NOT MARK CASSE Kentucky Derby trainer Bill Mott rides to his barn after watching a workout at Churchill Downs, Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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Kentucky Derby entrant American Promise is lead off the track by trainer D. Wayne Lukas after a workout at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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Trainer Bob Baffert does an interview outside his barn at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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Trainer Todd Pletcher watches a workout at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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Trainer Bob Baffert watches a horse outside his barn at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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A horse is ridden to the track for a workout at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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Kentucky Derby entrant Render Judgement works out at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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Kentucky Derby entrant Citizen Bull works out at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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Kentucky Derby entrant Burnham Square works out at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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Kentucky Derby alternate Baeza works out at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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Kentucky Derby entrant Burnham Square works out at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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Kentucky Derby entrant Neoequos works out at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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Kentucky Derby entrant Grande works out at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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Kentucky Derby entrant Flying Mohawk works out at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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Kentucky Derby entrant Flying Mohawk works out at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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Kentucky Derby entrant Luxor Cafe, from Japan, works out at Churchill Downs Monday, April 28, 2025, in Louisville, Ky. (AP Photo/Charlie Riedel)

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This is a photo collection curated by AP photo editors.