Jaye Crockett led the Red Raiders with 19 points and all five starters scored in double figures in Texas Tech's first Big 12 win.
The Red Raiders lead by as many as 22 in the first half and were able to hold off Baylor for the program's first win over a ranked team since 2009.
Texas Tech (9-8, 1-3 Big 12) travel to Fort Worth to face TCU Friday at 5 p.m.
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