Assertion: seam fastball | /r/CapableOf | produce flicker rate of 80 hz
Facets:
Source sentences:
text: With each rotation, a four-seam fastball presents four seams crossing the vision of the batter, producing a flicker rate of 80 Hz, which results in the batter not perceiving any features on the ball and having fewer visual cues than with the two-seamer to track it.