[1][2][non-primary source needed] Both teams competed in the Western Conference of the USL Championship, the second tier of soccer in the United States.

[4] San Antonio came back from being down 0–2 but eventually lost to RGV as Lovejoy secured the win with a stoppage-time goal.

[5] Needing a win in their final regular-season match to secure a place in the 2016 USL Playoffs, San Antonio FC lost to RGV 0–3 in Edinburg.

Since the 2019 season, both RGV and San Antonio's derby matches have also been counted in the Copa Tejas competition that pits the four USL Championship clubs from Texas to determine the best in the state.

[10][11] After a pair of 1-1 draws, San Antonio would end the season series with a 2-1 road victory over RGV giving the Alamo City club the lead in wins over their south Texas rival.

The South Texas Derby would be played once again in 2021, this time as part of the 2021 USL Championship Playoffs in the Conference Semi-final round held in San Antonio.