The Red Raiders trailed until Toddrick Gotcher's field goal gave them a 20-19 lead with 5:01 left in the first half. That was the only lead change; Texas Tech eventually led 45-28 just over 3 minutes into the second half.
Texas Tech shot 39 percent from the field but made 84 percent from the free-throw line. The Rattlers made 53 percent from the free-throw line.
The Red Raiders open Big 12 Conference play Saturday at TCU.