Minnesota Twins
John Klein has thrown 1,381 pitches that have been tracked by the PITCHf/x system between 2023 and 2026, including pitches thrown in the MLB Regular Season, The World Baseball Classic and Spring Training. In 2026, they have relied primarily on their Fourseam Fastball (95mph), also mixing in a Change (86mph), Slider (85mph) and Curve (80mph).
In 2026, compared to other RHP:
Their fourseam fastball results in somewhat more flyballs compared to other pitchers' fourseamers, has slight armside run and has slightly above average velo. Their change dives down out of the zone, generates a high number of swings & misses compared to other pitchers' changeups and is slightly firmer than usual. Their slider is an extreme flyball pitch compared to other pitchers' sliders and has short glove-side cut. Their curve has a sharp downward bite, is slightly harder than usual, results in somewhat more flyballs compared to other pitchers' curves and has slight glove-side movement.