Columbus State received an at-large bid to the NCAA Division II Southeast Regional on Sunday night.
The Cougars are the No. 3 seed and will open play against No. 4 seed USC-Aiken.
Lander, the Peach Belt Conference champion, is the host team.
The other first-round games include No. 2 Mount Olive vs. No. 5 Georgia College and No. 1 Lander vs. No. 6 Catawba.
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The schedule for the regional will be announced Monday.
The winner of the eight regionals will advance to the Division II World Series in Cary, N.C.
The Cougars are 36-15 after losing in the opener of the PBC tournament late Saturday night.
Columbus State made five errors and went on to lose 16-6 to Montevallo at Roberto Hernandez Stadium.
Shortstop Carson Bowers made three of the errors and left fielder Matt Nettles made the other two.
The Cougars battled through the early mistakes and led 6-5 after four innings. All five of Falcons' run up to that point were unearned off CSU starter Mike McGinnity.
But then Montevallo broke the game open with eight runs in the top of the fifth. After a walk, a home run and another walk, McGinnity was taken out.
Sean Muller gave up a walk, a single and hit two straight batters to force in a run. Jordan Villhauer came in to get the final two outs of the inning but not before giving up two more runs.
Montevallo reliever Jeremy Bagnell (4-2), who came into the game in the third inning, settled down and held CSU to one run on five hits over the final 6 2-3 innings.
Blake Edwards led the Cougars, going 3-for-5 with an RBI. Brendan Collins, Jimmy Obermark and Mike McClellan had two hits apiece.
McGinnity (6-1) suffered his first loss of the season. He allowed eight runs (three earned) and six hits in 4 1-3 innings. The CSU bullpen allowed eight runs (all earned) in 4 2-3 innings.