show someone a clean pair of heels [mainly British]
to win a sporting contest clearly and decisively
Lum Kon showed everyone a clean pair of heels in the 100m and 200m.
to be clearly better than the rest of the people or organizations in a competitive situation
Only one point stands: Japan has shown all the other rich countries a clean pair of heels.
Easy Learning Idioms Dictionary. Copyright © HarperCollins Publishers