OZONE PARK, N.Y. – Travis Stone, the race-caller at Monmouth Park, has been hired by the New York Racing Association to be the backup announcer to John Imbriale. Stone will call the races this Sunday and Monday as well as Nov. 16 and Nov. 19-23. He also will call on days when Imbriale is ill or on vacation. When not calling, Stone will work in various departments at NYRA, including operations, simulcasting, and television. Stone will remain the announcer at Monmouth Park. Stone’s hiring coincides with the 35th anniversary of Imbriale’s first day at NYRA.