Bob Baffert, trainer of Kentucky Derby winner Medina Spirit, stands near the track at Churchill Downs in Louisville, Kentucky, on April 28, 2021.

Bryan Woolston | Reuters

A horse owned by Hall of Fame trainer Bob Baffert was euthanized at Pimlico Race Course in Baltimore on the undercard of Saturday’s Preakness Stakes.

Havnameltdown, a 4-5 favorite in the sixth race, broke down and threw jockey Luis Saez at the top of the stretch.

“Unfortunately, Havnameltdown went poorly at the top of the stretch,” track vet Scott Hay told TVG. “He sustained a very serious injury to his left front ankle. It was just to such an extent that it was basically impossible to transport him. They had to humanely euthanize him at the scene immediately.”

The culling of the field comes in the wake of a string of horse deaths leading up to the Kentucky Derby earlier this month at Churchill Downs.

Eight horses died in a little more than a week at the famed Louisville track, raising concerns about the sport’s treatment of its animals.