Blanks was 8 of 13 from the field and made all 10 of his free throw attempts for the Tigers (5-11, 4-0 Southwestern Athletic). Malcolm Riley added 21 points and 11 rebounds, while Chris Thomas finished with 15 points.
Texas Southern closed the first half on a 16-4 run - including a 3 by Blanks just before half - which turned a tied game into a 41-29 advantage at the break.
The lead reached 20 on Riley's layup with 9:17 left. Jackson State chipped away and trailed by four with 1:03 left, but Thomas made and inside bucket and the Tigers held on.