San Antonio won the final game by a 7-3 score and thus clinched the series 3-1.
"We think this is our year, but we're taking it one game at a time," said Sincere Robinson, who was named series MVP.
For the series, Robinson hit .375 with a .412 on-base percentage. He drove in 7 RBI and scored 3 runs.
The San Antonio Missions don't know who they will face in the next round. They will play the winner of the Tulsa Drillers - Northwest Arkansas Naturals series. Tulsa leads the series 2 games to 1. The Round 2 schedule will be announced after the Round 1 finishes.