Roby Politi, of Lake Placid, N.Y., co-captain of the St. Lawrence University ski team, won the Alpine combined championship at three major eastern collegiate winter carnivals. He won four straight events at Dartmouth and Williams en route to Middlebury.
Pat Tryon, of North Hills, Del., turned 14 late enough to defend his national 13-and-under singles badminton title with a 15-4, 15-12 win. He also won two categories of doubles to become the only winner of three titles at the 25th National Junior Tournament.
Jimmy Stewart, 16, amazed a field of professionals by carding rounds of 71-71-70-71—283 to tie for eighth place in the recent Singapore Open, which was played on his home course. Jimmy, an American citizen, took up golf at the age of five in Miami.
Tim Moore, a 5'5" senior at Westerville ( Ohio) High, has won the state high school diving championship (one-meter board) for three of the last four years. Last year he took the world age-group title in Belgium and he placed fifth in the 1971 Men's Nationals.
Nancy Henry, 11, of Pittsburgh, holds three district and state age-group swimming records for the butterfly: the AAU district in the 100 (1:18.1) and 50 (33.3) and the Pennsylvania YMCA Cadet in the 50 (32.3). She also holds 25 age-group pool records.
Max Gaither Jr., a lieutenant stationed at the Little Creek amphibious base in Norfolk, Va., won the Atlantic Fleet and the All-Navy handball tournaments for the second straight year; the Atlantic final by scores of 21-1,21-2, the All-Navy title by 21-6, 21-5.