Secrest, 43, a truck driver, set the World 24-Hour Cycling Championship record when he completed 503.2 miles without drafting to break the old mark of 470.2 miles set in 1991 by Darrell Bowles of Mesa, Ariz. Secrest also won the '87 Race Across America and thrice finished second in that event.
McGuire, 50, a car salesman, hit 525 clay targets without a miss over two days at the Grand American Trapshooting Tournament to lead Missouri to the [earn title and win the individual crown for himself. He had finished second in this event four times, losing in a shootoff on each occasion.
Mandy, 15, won the girls' bantamweight division at the world junior taekwondo championships for competitors ages 15 to 18 when she defeated Likeleli Tamas of Lesotho, 7-4. Earlier she had won the girls' flyweight division at the U.S. taekwondo championships.
Manzi, 46, became only the seventh driver in standardbred racing to reach 7,000 wins when he drove Dreamland's Onyva to victory in a maiden race at Freehold Raceway. Among his wins are victories in the Cane Pace, the World Trotting Derby and the Kentucky Futurity.
Peterson and Zimpfer, both 22, swept the singles and doubles titles for men and women at the Intercollegiate Tennis Association summer championships. Peterson, a senior at Southern Cal, defeated Reed Cordish, a June graduate of Princeton, 6-2, 6-2, to win the men's singles title and then successfully teamed with Jim Thomas, a June graduate of Stanford, in the doubles. He also reached the semifinals of the NCAA singles championships in 1995 and '96. Zimpfer, a senior at Wisconsin, beat Katie Schlukebir, a Stanford senior, 6-2, 6-3, in the women's singles and then teamed with Schlukebir to clinch the doubles.