New Mexico State's Kevin Arnois made a 3-pointer with 6 seconds left in regulation Thursday night to push the game to overtime.
The four extra periods were the most in a single day in NCAA tournament history.
Xavier Thames scored the first basket of the extra session and the fourth-seeded Aztecs (30-4) never trailed. Thames finished with 23 points for San Diego State, which will play 12th-seeded North Dakota State — an overtime winner itself over Oklahoma earlier in the day.
Seven-foot-5 Sim Bhullar had 14 points and seven boards for the 13th-seeded Aggies (26-10) before fouling out in the OT. Daniel Mullings led the Aggies with 18.
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