No Killing: Kakashi (Land of Waves) vs Itachi (Uchiha Hideout)

[Infant]

Kakashi, as he was when he fought Zabuza and was saved by his students
Itachi, as he was when he fought Sasuke

Its a standard fight with fair conditions. The only rule is that neither fighter must die! They must incapacitate, but NOT KILL.

They have full knowledge on each other