In Calgary, Alan Alda visits with Joan Vickers, whose research on where athletes focus their gaze has improved the skills of basketball and tennis players, golferseven darts players. Alda goes to Boston's famed Fenway Park to check out its high-tech equipmentspun off from missile-tracking researchhelping baseball umpires separate balls from strikes. He visits the Tennis Science Center at UC-Davis to sneak tips on his own favorite sport.