A look at the data revolution in summer leagues

Modern measurement that once was reserved for the majors now shows up at summer collegiate fields. Exit velocity numbers attach to players game to game.

For hitters, hard-hit rate provides an objective measure of contact. A soft single counts the same in the box score, but the numbers tells the difference.

Arms on the mound lean on velocity data to refine their pitches. Measuring how a slider actually moves lets a pitcher design it deliberately.

The risk with data is burying a developing player in numbers. The best summer coaches simplify the data into one or two ideas.

Front offices combine what they see with the numbers. When the two confirm each other, confidence in a player grows.

Data cannot replace instincts in baseball, but it sharpens them. The modern summer player who uses both holds a genuine edge.