Basewinner

QERA: QuickERA (QERA) estimates what an umpire’s ERA should be based solely on his strikeout rate, walk rate, and GB/FB ratio. Lower is better for UNDERS. Higher is better for OVERS.  K:  Umpires Strikeout Rate/MLB Strikeout Rate scaled to 100. Higher number means more strikeouts. BB:  Umpires Walk...