Arizona Diamondbacks
Merrill Kelly has thrown 15,841 pitches that have been tracked by the PITCHf/x system between 2019 and 2025, including pitches thrown in the MLB Regular Season, the MLB Postseason, The World Baseball Classic and Spring Training. In 2025, they have relied primarily on their Fourseam Fastball (92mph) and Change (88mph), also mixing in a Cutter (91mph), Sinker (92mph), Curve (82mph) and Slider (86mph).