Arizona Diamondbacks
Justin Martinez has thrown 2,975 pitches that have been tracked by the PITCHf/x system between 2022 and 2025, including pitches thrown in the MLB Regular Season, Spring Training and Fall/Winter Ball. In 2025, they have relied primarily on their Sinker (100mph), Splitter (89mph) and Fourseam Fastball (100mph), also mixing in a Slider (92mph).
In 2025, compared to other RHP:
Their sinker is thrown at a speed that's borderline unfair, results in many more groundballs compared to other pitchers' sinkers, has slight armside run and has some natural sinking action. Their splitter is thrown extremely hard, generates an extremely high number of swings & misses compared to other pitchers' splitters and has some natural sink to it. Their fourseam fastball generates an extremely high number of swings & misses compared to other pitchers' fourseamers, has heavy sinking action, is a real worm killer that generates an extreme number of groundballs compared to other pitchers' fourseamers, is thrown at a speed that's borderline unfair and has slight armside run. Their slider is thrown extremely hard, generates an extremely high number of swings & misses compared to other pitchers' sliders, has less than expected depth and has primarily 12-6 movement.