ARCADIA, Calif. – Xten, a 3-year-old maiden colt, was euthanized on Friday after being involved in an apparent collision during a workout that led to the cancellation of training on the main track. Trainer Tim Yakteen said on Friday afternoon that Xten was found to be suffering from neurological issues and could not be saved. At approximately 6:30 a.m., Xten was involved in an accident shortly after starting a workout. The horse fell on the backstretch and was attended to by a veterinarian and a group of outriders, track employees and exercise riders for more than three hours before being transported by horse ambulance to the backstretch hospital. At times, Xten appeared to be unable to rise to his feet while he was being treated on the racetrack. No other horses were believed to be injured in the collision. Xten, winless in four starts last year, was owned by breeder Stetson Land Company. Friday afternoon, Yakteen praised the efforts of veterinarians and track employees for aiding Xten after the accident.