Baseball—my passion and profession for three decades—has been at the forefront of the analytics revolution sweeping through sports. And the game is just beginning.

The proverbial tip of the iceberg: Statcast, a 3-D tracking system that provides detailed metrics on the locations and movements of the ball, the players, and even the umpires. While the system is currently installed in only a handful of ballparks, Major League Baseball plans for all 30 stadiums to have it by 2015. Eventually, such systems will proliferate not just...