FORT WORTH, Texas — The Jayhawks finished 29.5 percent from the field (18 of 61), their worst in 514 games — since making only 15 of 51 shots (29.4 percent) against Kentucky on Dec. 1, 1998. It was their lowest-scoring game since also scoring 55 in an NCAA tournament loss to UCLA on March 24, 2007.
They made only 3-of-22 from 3-point range, including two in the final minute.
McLemore led Kansas with 15 points, 13 after halftime. Jeff Withey had 12 points and Naadir Tharpe 11.
"We knew going in that we would have to play extremely well, offensively, defensively, extremely hard, and they were going to have to help us out," said first-year TCU coach Trent Johnson said. "When I said help us, obviously they missed a lot of shots they probably would make."
Garlon Green scored 20 points for the Horned Frogs, including five in a row after a late 17-4 Kansas spurt.
"It means a lot. Obviously we've had some tough years," said Green, a senior forward. "We've had a tough year right now, but this is a big win. We need to carry this momentum."
TCU played the first of three games in six days. The Frogs host fellow league newcomer West Virginia on Saturday and go to Oklahoma on Monday night.
Kansas, which plays at Oklahoma on Saturday, hasn't lost three games in a row since February 2005 — a stretch with games that went to overtime and double-overtime.
Tharpe scored nine points in a 2-minute span for Kansas, with a 3-pointer and six consecutive free throws, before a basket by Withey with 6:49 left got the Jayhawks within 44-40 — the closest they got after TCU's game-opening spurt.
After Tharpe missed a 3-pointer on a break, Adrick McKinney slung a pass inside to Green for a layup. McLemore, the Big 12's top freshman scorer, missed an open 3-pointer before Green had a three-point play to stretch the TCU lead back to 49-40.