Juan De Villafranca, 19, of Mexico City, captured three U.S. squash racquets titles in 16 days. Juan won the University Club inter-collegiates in New York, the Luckenbach Memorial in Glen Cove, N.Y. and the Apawamis Invitational in Rye, N.Y.
Diana Cartwright, 10, of Muncie, Ind., is state champion in six different events. She won the Indiana YMCA one-meter diving title, the uneven bars in the YMCA gymnastics meet and all four events in the Junior Olympic gymnastics competition.
Dacia and Traian Schileru, varsity divers at Wayne State University in Detroit, are the first sister-brother combination to qualify for an NCAA championship, the 1974 Division II event at Long Beach, Calif. Dacia, a senior, who last year became the first woman to compete in the NCAA finals and finished 13th, has qualified for the three-meter event. Traian, a freshman and the team's leading scorer with 11 firsts and 75 points, is qualified at both one and three meters. Dacia is ninth leading scorer for the Tartars with four firsts and 33 points.
Tyrone Rose, a senior at Albany ( Calif.) High School, is undefeated in 48 wrestling matches this season. The team captain, Rose has also won titles in five tournaments, and in four of them was named the outstanding wrestler. The Cougars are 17-17 this year.
Theresa Walatka, a junior forward at Assumption High in Davenport, Iowa, scored 43 points in the Knights' 71-42 win against Bettendorf. Theresa also competes on four other teams: in tennis, as a diver on the swimming team, and in softball and gymnastics.