Cron hasn't played since Tuesday and will be out at least a few more days due to back spasms, Danielle Allentuck of The Denver Gazette reports.

EDGE Analysis

It appears to be a day-to-day situation at this point, although the Rockies aren't providing a timetable for Cron's return. Mike Moustakas and Harold Castro have handled first base the last two days and Michael Toglia would also be a candidate to see time there if Cron's absence drags on.