Leave somebody in the dust
Definition 1 of 2
Pro Tip 1/3Competition Aspect
Used to describe a clear, dominant win, often in sports or competitions. 
She studied so hard that she left everyone else in the dust during the final exams.
Pro Tip 2/3Non-literal
This phrase is not about physical dust; it's about being far ahead. 
His innovative design left the other architects in the dust.
Pro Tip 3/3Success Imagery
Imagine an athlete leaving others so far behind they eat dust. 
With his new strategy, he left his sales targets in the dust.