Sport: The Prudent Milkman

One evening last week a plumpish little five-year-old pacer named Hi-Lo's Forbes sped around Baltimore Raceway to win its $10,000 Special Invitational free-for-all pace. The horse was one-tenth of a second off the track record, but in June at Long Island's Roosevelt Raceway he had set his own world mark for the mile (1:58 1/5). After such a triumph, his owner might properly have gone on a nightlong celebration. Instead, hefty Earl Wagner, 35, grabbed the first plane ride of his life to hurry back to his home in Landover Hills, Md. By three-thirty...