Sport: Super-Seniors: Age Will Be Served

Little wonder that he is ranked No. 1. During practice sessions last week, he hit 100 forehand and 100 backhand shots—all with his racquet cover on to make swinging more difficult. Removing the cover, he stroked another 200 balls before loosening up his shoulder with 25 practice serves. Then he limbered up his legs—already toughened by twice-weekly circuits of a 4½-mile-long cross-country ski trail—with 100 or so turns of a jump rope. Finally he took to the court for several brisk sets of tennis. Still, though he is as hard as a spike at 6 ft., 170 Ibs., the champ was...