James Cassidy, a renowned horse trainer, passed away from heart disease on Wednesday at his home in Monrovia, California, at the age of 80. Born on August 21, 1945, in New York City, Cassidy began his equestrian journey at the age of 12 with show horses before transitioning to racehorses and obtaining his trainer’s license in 1975. He spent over ten years assisting prominent Eastern trainers like Joe Canty, Frank Whiteley, and Charles Sanborn before establishing his own training career.
According to Equibase, Cassidy debuted as a trainer on October 2, 1989, at Belmont Park. By late 1993, after limited racing activity in New York, he relocated to Southern California, where he earned his first victory with Royal Trent on December 12, 1993, at Hollywood Park. He continued managing a smaller stable at Santa Anita until his death, with his last horse, Pure Chaos, finishing third in a race on January 11.
Throughout his career, Cassidy secured 442 wins and accumulated earnings of $30,715,582. His final win came on April 25, 2025, at Santa Anita with Princess Snow, owned by DP Racing. Among his top horses were multiple Grade 1 winners such as Evening Jewel, The Usual QT, and Ticker Tape, along with G2 winner Moscow Burning. Cassidy was also a respected leader, serving multiple terms as president of the California Thoroughbred Trainers, representing California’s horse trainers.
Alan Balch, executive director of California Thoroughbred Trainers, reflected on Cassidy’s deep love for horses and his shared passion for show horses and the Yankees. Cassidy’s notable horses, including Evening Jewel, a stakes winner from 2009 to 2011 with over $1.2 million in earnings, and other champions like Ticker Tape and The Usual QT, highlighted his exceptional skill with mares. Cassidy’s leadership extended beyond training, actively supporting the Backstretch community through roles at the Gregson Foundation and CTT.
Details about Cassidy’s memorial service will be announced in due course.
Fan Take: James Cassidy’s legacy resonates deeply within the horse racing community, not only for his impressive training record but also for his dedication to the welfare of the sport and its participants. His passing is a significant loss, reminding fans and professionals alike of the profound impact one devoted individual can have on the future of horse racing.

