Alcorn Central opened play on the junior high field of the BNA Park complex, defeating the Oxford Chargers 2-1.
One field over, the Corinth Warriors defeated South Pontotoc 4-2, for the Alcorn County rivals to advance into Tuesday's double-header play.
The Aggies of Kossuth dropped their opening game at the park to Lafayette in a 5-0 decision.
Quade Reaves gained the win for the Warriors, throwing 10 strikes in seven innings.
South Pontotoc out-hit the Warriors by a 7-5 ratio, but a 2 RBI single from Austin McClamroch during the second inning gave Corinth a 3-1 advantage.
Reaves opened the third inning with a strike, and two back to back singles drove in South Pontotoc's Colby Dill for the last run the Cougars would score.
Two more strike outs closed the inning as Tanner Maness opened the Warriors turn at bat with a single.
Reaves walked to first before two more hits, from Cody Davis and Noah Hill, consecutively loaded the bases and placed Maness at home for the 4-2 advantage.
The Cougars attempted to strike once more, a double from Wesley Ross placing a runner in scoring position.
With a fielders choice from Kaleb Morgan, Dill ran for home to be tagged out at home plate by catcher Tyler Mercer.
South Pontotoc logged one final hit in the sixth inning before the Corinth defense closed the game with only one runner touching beyond second base - a double from Kolten Ferguson providing the hit.
Alcorn Central and Corinth both advance to today's round of play, where a double header awaits should the teams win the first match-up.
The Warriors will face Itawamba at 10 a.m. on the high school field while ACHS will play Pontotoc at 10 a.m. on the junior high field.
A win will place Corinth up against the winner of Mooreville/Ripley or Tupelo, set for 4:45 p.m. on the high school field.
Central also will take the field at 4:45, on the junior high dirt, facing the winner of the Saltillo/Houston match-up.