With a chance to remain alive in the Big 12 title race, TCU squandered a big lead in a disappointing 82-81 loss at No. 23 Texas Tech Tuesday night. After leading by 10 with 6:55 remaining, TCU found itself down 75-73 with 1:27 on the clock as the Horned Frogs’ offense struggled down the stretch. TCU missed 10 of its next 11 shots after taking the double- digit lead while the Red Raiders stormed back at the free-throw line and with well executed offensive possessions. With 1:11 remaining TCU’s Micah Peavy had a chance to tie the game, but after missing both free throws teammate JaKobe Coles rip…