Valdez was diagnosed with a bruised left hand after medical testing Tuesday showed no fractures, Alex Stumpf of MLB.com reports.
After being hit by a pitch on the left hand Monday against the Diamondbacks, the 22-year-old underwent a "battery" of tests Tuesday and appears to have avoided a serious injury. Valdez should be considered day-to-day, though it's unclear if he'll be able to rejoin the lineup for Tuesday's contest.