College basketball's last remaining undefeated team, No. 7-ranked San Diego State, returns to Viejas Arena Saturday to host Mountain West Conference counterpart Nevada.

The Aztecs (18-0, 7-0 Mountain West) on Tuesday extended their best start since going 20-0 to open the 2010-11 season with a 64-55 victory over Fresno State. One day later, Auburn dropped a tilt with Alabama that leaves San Diego State as the only unbeaten in the nation.

Extending its perfect start to 18 games did not come without some difficulty. San Diego State struggled offensively for stretches at Fresno State, but a defense that ranks among the nation's best came through.