Who Says That A Fight Has To Start On The Feet?

[DaPunkMinowaMan]

Is there a rule stating that a fight must start on the feet?

Why I can't I stay on my knees and crawl towards my opponent? Why can't I do a forward ninja roll towards my opponents legs?

Grapplers are ALWAYS complaining about "MMA is unfair to grapplers because every fight has to start the feet," but is this a rule?

let me know.

Not Me.

 

[DLX]

I get the whole element of surprise thing, but what was the point of the second roll?