EDGEAI

MLBcontact quality pitcher hr prone

2.31 HR/9

Luis Castillo has allowed 19 home runs in 74 innings this season — 2.31 per nine, against a league rate near 1.25. His ERA is 5.45. ERA is the number everyone quotes and it is the wrong one for a home run market: a low-ERA fly-ball pitcher gives up more homers than a higher-ERA groundballer, and ERA cannot tell them apart.

Published Thursday, September 3, 2026

Luis Castillo has allowed 19 home runs in 74 innings this season — 2.31 per nine, against a league rate near 1.25. His ERA is 5.45. ERA is the number everyone quotes and it is the wrong one for a home run market: a low-ERA fly-ball pitcher gives up more homers than a higher-ERA groundballer, and ERA cannot tell them apart.

THE NUMBERS

angle
pitcher_hr_prone
direction
prone
pitcher id
622491
pitcher name
Luis Castillo
team
Chicago White Sox
matchup
Chicago White Sox vs Houston Astros
headline
2.31 HR/9
hr9
2.31
innings pitched
74
home runs allowed
19
era
5.45
detail
Luis Castillo has allowed 19 home runs in 74 innings this season — 2.31 per nine, against a league rate near 1.25. His ERA is 5.45. ERA is the number everyone quotes and it is the wrong one for a home run market: a low-ERA fly-ball pitcher gives up more homers than a higher-ERA groundballer, and ERA cannot tell them apart.

This record was written when the finding was first published and has not been edited since. The numbers and the wording are what our engines produced on the day.