MLB First Look Legend

by Derek Farnsworth (Notorious) Last Updated 2018-05-25 16:08:26

Term	Description
Opp. K%	Strikeout rate of the opposing offense against the handedness of the pitcher
SIERA	Skill-Interactive Earned Run Average – A good predictor of future ERA
ERA	Earned Run Average
K%	Percentage of batters a pitcher strikes out
BB%	Percentage of batters that a pitcher walks
SS%	Swinging Strike Percentage
GB%	Ground Ball Percentage
HC%	Hard Contact Percentage
FBv	Average Fastball Velocity
Run Total	Implied run total based on the Vegas line and over/under
RPG	Average runs scored per game this season
+/-	The difference between a team’s implied run total and their average runs scored per game
P vs. LHB	The xwOBA a pitcher allows to left-handed hitters
P vs. RHB	The xwOBA a pitcher allows to right-handed hitters
Team wOBA	The team’s average wOBA against the handedness of the pitcher they are facing
Team ISO	The team’s average ISO against the handedness of the pitcher they are facing

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