All cardsRemoving the Best and Worst · SP Outlier Impact
SP Outlier Impact
Leave-one-out ERA — which starters’ season lines are most distorted by a single start. · qualified only (55+ IP) · FIP version
One bad start blew up their ERA · BUY tier
Top 10 SPs by ERA drop when their worst start is removed.
One gem is masking their real form · SELL tier
Top 10 SPs by ERA rise when their best start is removed.