Zenyatta had a quiet day at trainer John Shirreffs’s stable on Thursday, a day after it was announced that she has been retired and will be relocated to Lane’s End Farm near Versailles, Ky., in December. Zenyatta was walked twice Thursday morning and was scheduled to have another walking session in the afternoon. A two-time champion, she retires with 19 wins in 20 starts, with her only loss a second to Blame in the BC Classic on Nov. 6. JAY HOVDEY: Zenyatta a vivid image amid confusion