Triple-A Charlotte reinstated Smith (shoulder) from its 7-day injured list Sunday.
The 22-year-old lefty will rejoin the Triple-A club after a five-week stint on the shelf due to a left shoulder impingement. Over 15 starts with Charlotte this season, Smith has submitted a 4.58 ERA, 1.37 WHIP and 84:37 K:BB across 57 frames.