Jamaal Franklin scored 15 of his 22 points in the first half to put No. 23 San Diego State up early, and James Rahon hit a key 3-pointer late in a 60-44 win over Missouri State.
The Aztecs led 39-30 midway through the second half before the Bears rallied. Missouri State (1-1) pulled within 41-37 on Anthony Downing's basket with 7:13 left.
But the Aztecs pulled away thanks to 3-pointers on consecutive possessions from Rahon and Chase Tapley.
It was the second consecutive victory for San Diego State since the Aztecs lost the season opener against Syracuse.