The Houston Astros’ Brad Peacock began his rehab assignment with the Triple-A Round Rock Express Saturday night, allowing five runs through 1.1 innings.

Peacock, who hasn’t pitched since June 27 against the Pittsburg Pirates, has dealt with right shoulder pain for more than a month. CBS Sports referred to it as inflammation, a non-specific and somewhat misleading term.

Everyone who throws a baseball as hard as they can repeatedly develops changes in their shoulder and elbow.  Most professional pitchers have some level of elbow and shoulder pain every day.  It’s not entirely clear what is limiting Brad’s effectiveness at the moment.