All Aboard, a 9-year-old Thoroughbred gelding ridden by Audrea Dyer, collapsed and died on the intermediate cross-country at the River Glen Horse Trials (Tenn.) today.
Dyer was uninjured when the incident occurred  between fences on course.
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The pair started at the novice level together in 2012, and last year they won the Richland Park CCI** (Mich.).
According to the U.S. Eventing Association, All Aboard (Silver Train—Melina’s Fuse, Lite The Fuse) will undergo a necropsy. Samples were collected and will be analyzed as a part of the ongoing USEA Cardiopulmonary Research Study.
