By DAVE SKRETTA
AP Basketball Writer

San Diego State is the lone unbeaten left in the nation, and the fourth-ranked Aztecs will try to keep it that way with games against Wyoming and UNLV this week. Elsewhere, the Big 12-SEC Challenge takes center stage next weekend with No. 15 Kentucky visiting No. 18 Texas Tech and top-ranked Baylor facing Florida. Seventh-ranked Dayton also has a pair of tough Atlantic-10 games this week against St. Bonaventure and Richmond, while Indiana can prove itself with back-to-back games against No. 11 Michigan State and No. 17 Maryland.

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