RELIEVERS: 2023 K%-BB% leaders to date

K%-BB% is the best metric for determining who can give you low xERA and WHIP among relievers. Let's see how the 2023 leaders are faring:

YTD                     Sv  IP  xERA WHIP K% K%-BB% hr/9
====================    == ==== ==== ==== == ====== ==== 
F.Bautista (BAL)        32 58.3 2.41 0.96 48   36    0.6
A.Chapman (TEX) (L)      3 45.3 2.25 1.10 45   32    0.2
J.Alvarado (PHI) (L)     6 26.0 2.44 1.15 36   28    0.7
A.J.Puk (MIA) (L)       15 40.3 3.20 1.19 33   28    1.6
M.Brash (SEA)            4 54.3 2.87 1.34 37   28    0.3
J.Hader (SD) (L)        27 43.7 3.14 0.92 40   27    0.2
R.Iglesias (ATL)        24 39.7 3.01 1.08 33   27    0.9
D.Williams (MIL)        30 47.3 2.86 0.95 37   26    0.6

This is an elite group. Half are...

Almost!

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