Statcast, the high‑speed tracking system deployed at every major league ballpark, has transformed the way baseball is studied. By capturing the exact moment a ball leaves the bat and the movement of every player on the field, it provides a treasure trove of data that goes far beyond traditional stats.
One of the most talked‑about figures is the ‘hard‑hit ball’ designation, which Statcast defines as any contact that results in an exit velocity of 95 mph or higher. This threshold helps isolate the most powerful swings and correlates strongly with extra‑base hits.
The Analytics Behind the Numbers
Expected batting average, or xBA, estimates the probability that a given batted ball will become a hit based on its exit velocity, launch angle and spray angle. Building on that, xwOBA incorporates exit velocity, launch angle and the runner’s sprint speed to model the likelihood of an outcome such as a home run or a stolen base.
EV50 takes a different angle, averaging the hardest half of a batter’s batted balls or the softest half of a pitcher’s allowed contacts. This metric smooths out variance and highlights consistency in performance.
Bat speed, measured at the sweet spot of the barrel, is another indicator of raw power. A swing that exceeds 75 mph in bat speed is typically labeled as ‘fast,’ and it often coincides with higher exit velocities.
Statcast also tracks ‘Ideal Attack Angle,’ a 5‑to‑20 degree window that maximizes launch efficiency, and xERA, which translates xwOBA into an earned‑run‑average‑style figure for pitchers. Meanwhile, the ‘Jump’ metric spotlights outfielders with the quickest reactions, and a ‘Bolt’ denotes any sprint that tops 30 ft/sec.