Measuring the impact of knuckleballers’ BIP propensities
Postscript, 4.23.25: This post was a first shot; for better analysis, go here. So how about knuckleballers? Do they throw balls that, when hit, are easier to field? This is often claimed. Their BIP_RBARb seems to support this position. BIP_RBARb stands for “balls-in-play runs below average,” with b denoting “beta”—because construction of this metric is expected […]