Spencer Arrighetti

Pitcher Profile

Spencer Arrighetti is a right-handed starting pitcher for the Houston Astros with a Stuff+ score of 105 (above avg — MLB average is 100). Posting 9.5 strikeouts per 9 innings, Arrighetti demonstrates above-average strikeout rate combined with shaky command (4.2 BB/9). Averaging 6.5 innings per start, the baseline projection targets 6.9 strikeouts per outing. The league-average ERA baseline (4.47) rounds out a reliable projection profile.

PitchProphet's 4-layer model adjusts Arrighetti's 6.9-K baseline daily: L1 season stats → L2 weather & air density → L3 opponent K% splits → L4 park factors. On a neutral day vs. an average lineup, the target lines are 6.9 Ks, 4.47 ERA, 6.5 IP, and 4.2 BB/9. Colder weather and favorable wind add roughly 0.3–0.8 extra Ks; high-altitude parks like Coors subtract from the ERA side.

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