11.   Gamely, Leonidis tried, but his knees buckled.

12.   Harris, who blocks for Heisman Trophy candidate Curtis Enis, was hurt during the second quarter when his knee buckled as he tried to avoid a tackle.

13.   He missed just right, and his knees buckled in disappointment.

14.   He then got up and tried running off the field, but his knees buckled, and after several wobbly steps, he was assisted to the bench.

15.   He was untouched when his knee buckled while dropping back to pass late in the first half.

16.   He went back in, but the knee buckled again as he reached midfield.

17.   He went to the bench, where his knees buckled.

18.   Her knees buckled under her.

19.   His knees buckled and he slumped to the ground, his back and head striking a wall.

20.   His knees buckled.