Mr. Heckle and Mrs. Jeckle, twin 2-year-old...

Mr. Heckle and Mrs. Jeckle, twin 2-year-old pacers, will compete in the same race, the third, Friday night in the Fairplex harness racing program at Pomona. Usually, only one of twin horses survives, and Friday’s race will be the first betting event including twins in harness racing history, according to the United States Trotting Assn.