16. Kicking the head of a grounded opponent.
A grounded opponent is any fighter who has more than just the soles of their feet on the ground. (i.e. could have one shin or one finger down to be considered a downed fighter) If the referee determines that a fighter would be a grounded fighter but is not solely because the ring ropes or cage fence has held fighter from the ground, the referee can instruct the combatants that he is treating the fighter held up solely by the cage or ropes as a grounded fighter
17. Kneeing the Head of a grounded opponent
A grounded opponent is any fighter who has more than just the soles of their feet on the ground. If the referee determines that a fighter would be a grounded fighter but is not solely because the ring ropes or cage fence has held fighter from the ground, the referee can instruct the combatants that he is treating the fighter held up solely by the cage or ropes as a grounded fighter.
18. Stomping of a grounded fighter
Stomping is considered any type of striking action with the feet where the fighter lifts their leg up bending their leg at the knee and initiating a striking action with the bottom of their foot or heel . (Note) Axe kicks are not stomps. Standing foot stops are NOT a foul. As such, this foul does not include stomping the feet of a standing fighter.