Marshall Cassidy, the announcer at the New York tracks from 1979 through 1990, passed away Sunday at his home in Saratoga Springs, NY. He was 75. According to friends of Cassidy, he died in his sleep. The cause of death was not immediately known. Cassidy began his announcing career as the backup caller to Dave Johnson and then Chic Anderson. After Anderson passed away in 1979, Cassidy was promoted to the job of head announcer. In 1990, after the Saratoga meet concluded, he was replaced by Tom Durkin. Over his...