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This is a complete statistic reference guide for Vins Bet MLB System.
FIP: Fielding Independent Pitching (FIP) measures what a player’s ERA would look like over a given period of time if the pitcher were to have experienced league average results on balls in play and league average timing.
We prefer this stat over ERA because it takes a lot of the luck out of the equation.
HR/9+: This stat takes a pitcher’s homeruns per nine innings average and balances them versus the league average. Over 100 is bad. Under 100 is good.
We also use this for hitters so the opposite is true. Over 100 is good, under is bad.
K%+: This stat takes a pitcher’s strikeouts per nine innings average and balances them versus the league average. Over 100 is good as it means they strike out more than average.
We also use this stat for hitters. In this case, anything over is bad meaning they have a high strikeout rate.
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BB%+:This stat takes a pitcher’s strikeouts per nine innings average and balances them versus the league average. Over 100 is bad as it means they walk a lot of people.
For hitters, over 100 is good because it means they draw a lot of walks.
Bullpen FIP-: This takes a team’s bullpen FIP and balances it against the league average. We use the FIP- here so anything under 100 is good.
BP FIP- L14: This is the same stat, but only for the past two weeks.
BABIP: This stands for batting averages on balls in play. It refers to non-homerun balls that are hit into the field. The league average in 2020 was .290 so a pitcher with a batting average lower than that could be getting lucky.
LOB%: This stands for left on base percentage. It refers to the number of runners on base that fail to score. A high left on base percentage can often mean good luck.
wRC+: wRC+ measures how a player’s wRC (Weighted Runs Created) compares with league average after controlling for park effects. The league average is 100 so anything above this is good.
The MLB System also takes into account left/right splits for the pitcher they are facing. A team may have a high wRC+ against lefties, but struggle against righties. Or vice versa.
wRC+ L14: This is the same stat, but only for the past two weeks.
