Non-MLB
Although they have not seen a pitch in 2026, Desmond Jennings saw 9,541 pitches that were tracked by the PITCHf/x system between 2010 and 2016.
In 2016, compared to how other hitters perform with similar pitches:
Against Fastballs (588 seen), they had a patient approach at the plate (0.21 c) with a disastrously high likelihood to swing and miss (32% whiff/swing).
Against Breaking Pitches (205 seen), they had a very patient approach at the plate (0.31 c) with a below average likelihood to swing and miss (25% whiff/swing).
Against Offspeed Pitches (99 seen), they had a patient approach at the plate (-0.08 c) with a league average likelihood to swing and miss (33% whiff/swing).