Mike Conley led Memphis with 17 points. Gasol finished 4-of-6 from the field, with eight rebounds and three blocks in just under 20 minutes.
"We're in good shape even if these games are a little different than regular ones. This is pre-season where you're trying to find your rhythm," Gasol said. "Now we'll see how it goes for the rest of the season."
Spaniards Gasol and Juan Carlos Navarro played at the Palacio de Deportes for the first time since Spain fell to Russia 60-59 in the European championship final last month, when Gasol's jumper lipped out as time expired.
Emilio Jasen led Estudiantes with 17 points, while centre Larry Lewis -- one of 38 Americans playing in the Spanish league -- had 14.
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