Grade II winner A. P. Assay, whose yearling filly by Gone West sold for $1.6 million at the Keeneland September yearling sale, was euthanized Sept. 27 after breaking her neck at William S. Farish's Lane's End Farm near Versailles, Ky. "There was a storm that went through here," said farm manager Mike Cline. "We suspect she might have fallen and broken it. There were no marks on her."Nine-year-old A. P. Assay, a member of the first crop of foals by Lane's End stallion A.P. Indy, raced as a homebred for John Toffan and Trudy McCaffery, winning five of 14 starts and earning $381,691. She won the A Gleam (gr. II) and Desert Stormer Handicaps, both at Hollywood Park.A. P. Assay, a half-sister to millionaire Came Home out of the Clever Trick mare Nice Assay, was not in foal at the time of her death.