Arizona Diamondbacks
Spencer Giesting has thrown 1,673 pitches that have been tracked by the PITCHf/x system between 2025 and 2026, all of them occuring in Spring Training. In 2026, they have relied primarily on their Fourseam Fastball (92mph) and Slider (82mph), also mixing in a Sinker (91mph), Curve (79mph) and Cutter (90mph). He also rarely throws a Change (85mph).
In 2026, compared to other LHP:
Their fourseam fastball has much less armside movement than typical, results in more flyballs compared to other pitchers' fourseamers, has some natural sinking action and has essentially average velo. Their slider sweeps across the zone, results in somewhat more flyballs compared to other pitchers' sliders and has some two-plane movement. Their sinker generates an extremely high number of swings & misses compared to other pitchers' sinkers, has surprisingly little armside run, results in more flyballs compared to other pitchers' sinkers and has some natural sinking action. Their curve is an extreme flyball pitch compared to other pitchers' curves, is slightly harder than usual and has slight glove-side movement. Their cutter (take this with a grain of salt because they've only thrown 11 of them in 2026) generates an extremely high number of swings & misses compared to other pitchers' cutters, is blazing fast, has extreme cut action, is an extreme flyball pitch compared to other pitchers' cutters and has some natural sink. Their change (take this with a grain of salt because they've only thrown 1 of them in 2026) is basically never swung at and missed compared to other pitchers' changeups, dives down out of the zone, is an extreme flyball pitch compared to other pitchers' changeups and is slightly firmer than usual.