The drop shot against deep defenders
When both defenders are pinned deep against their back glass, a soft drop shot just over the net is a common way to finish the point.
Trin 1
You keep them deep with a volley into the back corner.
Trin 2
Both are now well back, near their glass.
Trin 3
You play a soft drop shot just over the net. It bounces twice before they can get there.