In a game where they held the lead through the second quarter and the entire second half, this was the first time since 2016 the Lady Tigers have won at TSU.
GSU defeated TSU 75-67 as GSU recorded their fourth win in conference play.
Shakyla Hill posted her second triple-double in seven days.
The Lady Tigers trailed by six midway through the first quarter, before closing the period on a 12-5 run.
GSU outscored TSU 23-14 to take a commanding 37-28 lead going into the half.
At the start of the second half the Lady Tigers saw their lead cut to four, before going on an 11-4 run to close out the third period ahead 54-43. The Lady Tigers would extend their lead to 64-48 in the final period.
Jazmin Boyd was one of three players who ended the game in double figures scoring a team-high 20 points, while going 5 for 9 from the three point line.
Camryn London added 10 points.
On Monday afternoon, Shakyla Hill hit a go ahead bucket with 10 seconds remaining in the game allowing GSU to capture another SWAC victory over Prairie View A&M 64-63 at the Nicks Recreation Center.
Grambling State (8-10 overall, 5-1 SWAC) trailed before taking a lead into the second quarter.
GSU would go on to outscore the Panthers 20-19 in the second quarter to take a 37-35 lead going into the half.
Benefiting from an 11-3 run in the third period the Panthers took a 53-48 lead into the final period.
The Lady Tigers responded with a 7-2 run to tie the game at 55 after Jazmin Boyd nailed a three-pointer midway though the final quarter.
However, the Panthers responded grabbing a 63-62 advantage with 10 seconds remaining in the game.
Hill’s drive past two defenders to the lane ended with a go ahead layup off the glass with seconds remaining to give the Lady Tigers the one point victory.
GSU returns to action Saturday to face Jackson State University at 3 p.m.