RELIEVERS: The White Sox and ERA, xERA and pxERA
Jul 1 2014
This week, we start with a look at how actual ERA and expected ERA (xERA) interact at the halfway point in the season, along with where projected expected ERA (pxERA) fits in. One interesting place to do this is the Chicago White Sox pen:
IP ERA xERA pxERA
============== ==== ==== ==== =====
Belisario 37.0 5.35 3.26 3.47
Guerra 13.7 2.63 3.58 4.56
Putnam 29.0 2.17 3.24 4.01
Petricka 42.7 2.11 3.75 4.24
D.Webb 35.3 3.31 4.97 4.30The White Sox are having a hard time with their pen, and the focus is all on Ronald Belisario (RHP, CHW) who is the miscast, groundballing, not-enough-strikeouts deposed closer. Belisario has a 5.35 actual ERA,...
Almost!
You’re just a few clicks away from accessing this feature and hundreds more throughout the year that have a singular goal in mind: Winning your league. Subscribe to BaseballHQ.com here!
Already a subscriber? Sign in here
More From Relief Pitchers
Identifying the best setup men and projecting their future production.
May 31 2026 3:03am
May 31 2026 3:03am
Closer roles open for the taking as uncertainty reigns supreme in undecided bullpens. Four arms barns are in flux as they determine the best suitor for the challenge of the final frame.
May 24 2026 3:10am
May 24 2026 3:10am
Four more pens with fluid save situations.
May 17 2026 3:07am
May 17 2026 3:07am
Injuries and ineffectiveness keep the waiver wire moving. Four pens with changes and a look at who else might change soon.
May 10 2026 3:07am
May 10 2026 3:07am
This column took the best K-BB% relievers and filtered for xERA and HR/F as well to create a list of who performed in April.
May 3 2026 3:06am
May 3 2026 3:06am
