Brevin Nielsen O27 Index

Astros · percentile rankings vs the league
Player page JSON
Advanced · win value, fielding, second chances
WPA
+1.80
Leverage
1.18
OAA
+12.4
Field Runs
+9.7
BsR
+0.6
XBT%
53.3%
2C Runs
-2.4
R / 2C
-0.784
WP is split by batting half; OAA uses exact fielder credit on outs.
wOBA
0.371
xwOBA
0.356
Luck (wOBA − xwOBA)
+0.015
Exit velocity drives the outcome now, so a positive gap = out-hit his contact quality (lucky); negative = unlucky.

Hitting

vs 520 qualified · 31 batted balls
xwOBA
14
0.356
Avg Exit Velo
38
88.4
Max Exit Velo
74
119.0
Hard-Hit %
27
19.4%
Barrel %
35
6.5%
Sweet-Spot %
30
48.4%
Walk %
21
7.0%
Strikeout %
9
36.8%
Second-Chance %
19
7.0%
RISP-OPS
25
0.879
RISP Cash-In
43
0.424
Red = elite, blue = poor. Hitting bars rank batted-ball quality; pitching bars rank contact suppressed (so a low EV-against or Barrel% is elite). Cuts are calibrated to O27's exit-velocity distribution, not MLB's.
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