In Brazilian Jiu-Jitsu, "Knee on Belly" refers to a dominant control position where a grappler places their knee directly on the opponent's stomach, essentially pinning them down while maintaining mobility to transition to other attacks or submissions; it's considered a key transitional position often accessed from side control, allowing the top fighter to apply pressure and control with their knee on the opponent's midsection.

Key points about Knee-on-Belly:

Control position:
The primary function is to control the opponent by pinning them with the knee on their belly, preventing them from easily moving or escaping.

Transitional move:
Often used as a stepping stone to transition to other positions like mount or back mount, depending on the situation.

Submission opportunities:
While in knee-on-belly, the top grappler can set up various submissions by controlling the opponent's head and arms.

Similar to side control:
Although not exactly the same, the body positioning in knee-on-belly shares similarities with side control.