In a heartbreaking turn of events during Friday's Black-Eyed Susan Day at Laurel Park, a three-year-old thoroughbred named Hit Zero died shortly after his first-ever race. The tragedy cast a somber shadow over the festivities leading up to the Preakness Stakes, one of horse racing's most celebrated events.

Hit Zero entered the Maiden Claiming—the opening race of the day—as the favorite, but finished last. Moments later, the horse began coughing, collapsed to his knees, and passed away, according to reports from WBAL. It was a devastating end to what should have been a promising debut.

Justin Horowitz, Hit Zero's owner, took to Instagram later that evening to share the heartbreaking news. "It is with deepest sadness that I have to announce the death of my beautiful horse, Hit Zero. After his debut race today at Laurel Park, he suffered a sudden medical event and passed away. What was supposed to be a dream-come-true day to kick off his career—on my son's 6th birthday no less—ended in the tragedy that every horse lover fears," Horowitz wrote.

The horse's name held special meaning for the family. Hit Zero was named in honor of Horowitz's 10-year-old daughter Bailey, drawing from a cheerleading term that signifies a perfect routine. Bailey was at the track on Friday to watch Hit Zero compete, making the loss even more personal.

Trained by Brittany Russell, one of the sport's most accomplished trainers, Hit Zero was part of a busy day for her stable. Russell had 11 horses entered across multiple races on Black-Eyed Susan Day, including Bold Fact, who went on to win the same race Hit Zero had contested. In total, 14 races were held on Friday, headlined by the Black-Eyed Susan Stakes, the premier event of the pre-Preakness lineup.

This year's Black-Eyed Susan Day and the Preakness Stakes are being held at Laurel Park, located southwest of Baltimore, due to ongoing renovations at the traditional host venue, Pimlico Race Course. While fatalities at the track have been relatively rare in recent years, Friday's incident serves as a stark reminder of the risks inherent in the sport. For the Horowitz family, what began as a dream debut ended in a loss that no amount of preparation could prevent.