Washington Nationals
Robert Gsellman has thrown 6,884 pitches that have been tracked by the PITCHf/x system between 2016 and 2024, including pitches thrown in the MLB Regular Season and Spring Training. In 2024, they have relied primarily on their Sinker (92mph) and Slider (88mph), also mixing in a Change (85mph), Fourseam Fastball (92mph) and Curve (80mph).
In 2024, compared to other RHP:
Their sinker has an obvious tail, generates a high number of swings & misses compared to other pitchers' sinkers and has some natural sinking action. Their slider has primarily 12-6 movement, is much harder than usual and has less than expected depth. Their change is basically never swung at and missed compared to other pitchers' changeups, results in many more groundballs compared to other pitchers' changeups, has slight armside fade and has some natural sink to it. Their fourseam fastball has heavy sinking action, generates a high number of swings & misses compared to other pitchers' fourseamers, results in more flyballs compared to other pitchers' fourseamers, has essentially average velo and has slight armside run. Their curve generates more whiffs/swing compared to other pitchers' curves, has a sharp downward bite, is slightly harder than usual, has primarily 12-6 movement and results in somewhat more flyballs compared to other pitchers' curves.