Peterson is not in the lineup for Friday's game against the White Sox.
Gordon Beckham will man second base while Chase d'Arnaud leads off against lefty Chris Sale, snapping a streak of six consecutive starts at the keystone and atop the order for Peterson. The 26-year-old Peterson was red hot throughout June but is off to a bit of a sluggish start to July (6-for-29). He's also 6-for-27 (all singles) against lefties this season, and the White Sox are starting another southpaw in Jose Quintana on Saturday.