Law Johnson-Danner added 14 points and Aaron Clayborn's double-double, 13 points and 10 boards, helped Texas Southern (11-14, 10-2) outrebound Grambling 38-23.
Grambling State never led as Texas Southern won its sixth straight game.
After Will Hornsby's 3-pointer cut the deficit to 10, 50-40 for Grambling State, Strong's 3-pointer capped a 14-3 run, putting Texas Southern on top 64-43 with 7:58 remaining. Grambling trailed by double figures the rest of the way.
Texas Southern finished shooting 53.8 percent (28 of 52) while holding Grambling State to just 39.2 percent (20 of 51).
Terry Rose led winless Grambling State (0-22, 0-13) with 16 points.
ESPN's Dan Dakich joins The Paul Finebaum Show to discuss the SEC's presence in the NBA Draft.
Ted Kapita was the top-rated recruit from West Virginia in the class of 2015 and recently played at DME Academy in Florida.
With the Suns drafting Tyler Ulis, they now have five guards on their roster who attended Kentucky.