Atlanta will promote Southisene from High-A Rome to Double-A Columbus on Monday, Geoff Pontes of Baseball America reports.
Southisene will take the next step in his professional career, joining Columbus after slashing .255/.379/.428 with four home runs and nine stolen bases in 38 contests with Rome. The 19-year-old is regarded as a plus defender at shortstop and should have a good chance at sticking at the position once he eventually reaches the majors.