There's a new No. 1 in this week's Big 12 power rankings. And it's based on toughness. Texas Tech certainly has that.

Three new teams climbed into the top five of the latest CBS Sports College Basketball power rankings, led by fast-rising St. John's and Texas Tech. The Red Storm and Red Raiders moved up nine and 10 spots to No.

Only four teams moved week over week, with Oklahoma State and Baylor once again flipping spots at Nos. 3 and 4, while Arizona State and BYU flipped at Nos. 13 and 14. The 12 other teams remain in the same spot they were in last week.