The Orioles placed Franklin on the 10-day injured list Tuesday, retroactive to Aug. 31, due to left hand inflammation.
It's unclear when or how Franklin sustained the injury, though he last appeared in Sunday's game against the A's and went 0-for-3 with a strikeout. He'll be eligible to be reinstated Sept. 11 in Toronto, though it's unclear how long he's expected to be sidelined.